E. The World since 1900 · The World since 1900The World in 1900: Empires, Questions and Evidence
E1 A1.1 A1.2 A1.9 A1 A2About 70 minutes
Learning goals- I can describe the global balance of power around 1900.
- I can name the big forces that shaped the world since 1900.
- I can write factual, comparative, causal and evaluative questions.
- I can tell primary from secondary sources and cite them correctly.
Words to know
empire
A state that rules other territories and peoples, often by force.
sphere of influence
An area where a foreign power has special economic or political control without fully ruling it.
primary source
Evidence created at the time by someone involved.
secondary source
A later interpretation of the past based on evidence.
evaluative question
A question that asks for a judgement supported by evidence.
historical significance
Why an event, person or development matters: its impact, how many people it affected, how long it lasted.
citation
A note giving the details of a source so readers can find it.
A new century
Imagine opening a newspaper in 1900. The headlines are about empires. Foreign armies are marching into Beijing to end the Boxer Uprising. Britain is fighting the South African War against the Boer republics. The United States has just taken the Philippines from Spain and is fighting Filipino independence forces. In Paris, the World's Fair shows off electric lights, moving sidewalks and films.
If you had been born that year, you could have lived to see two world wars, the end of most of those empires, people walking on the Moon and the start of the internet. This unit is the story of that century and the years since. It is the last unit of CHY4U, so it builds on everything you learned in The World, 1789–1900: industrialization, nationalism and imperialism are the forces that shaped 1900.
The world in 1900: an age of empire
- Europe was at the height of its power. Britain ruled the largest empire; by about 1920 it covered roughly a quarter of the world's land. France, Germany, Russia, the Netherlands, Belgium, Portugal and Italy also held colonies.
- Africa had been divided among European powers after the Berlin Conference (1884–1885). Only Ethiopia, which defeated Italy at Adwa in 1896, and Liberia remained independent.
- Asia: Britain ruled India. France ruled Indochina. The Dutch ruled what is now Indonesia. Qing China was still independent but had been forced to grant foreign powers ports, trading rights and "spheres of influence". Japan had industrialized quickly, defeated China in 1894–1895 and took Taiwan.
- The Americas: most countries were independent, but many economies depended on exporting raw materials to Europe and the U.S. Mexico was ruled by Porfirio Díaz, whose long rule would end in revolution in 1910.
- Indigenous peoples on every continent lived under these states and empires. They were not passive: they negotiated, resisted, and kept their languages, laws and cultures alive, a theme you will follow to the end of this unit.
A quick summary of who held power around 1900. Notice that only two African states were independent, and that empire touched every region.The big forces of the twentieth century
Historians often organize the century since 1900 around a few big forces:
- Total war: two world wars that mobilized whole societies.
- Ideologies: liberal democracy, communism and fascism competed to shape the world.
- Decolonization: colonized peoples in Asia, Africa, the Caribbean and the Pacific won independence, mostly between 1945 and 1975.
- The Cold War: a rivalry between the United States and the Soviet Union, about 1945 to 1991.
- Human rights: new laws and movements for equality, from the United Nations to civil rights, women's rights and Indigenous rights.
- Globalization and technology: faster travel and communication, world trade, and new problems such as climate change and pandemics.
The curriculum groups these into three overall expectations. You will see the codes on every lesson.
The three overall expectations of this strand, and the historical thinking concepts each one stresses.How historians investigate: the inquiry process
In CHY4U you do not just learn what happened. You learn to investigate like a historian. That is the job of strand A.
1. Formulate questions. Good questions guide good research. Historians use different kinds:
- Factual: What happened during the Boxer Uprising?
- Comparative: How was Japan's response to Western pressure different from China's?
- Causal: Why did the Qing government support the Boxers in 1900?
- Evaluative: How significant was the Boxer Uprising in the fall of the Qing dynasty in 1912?
Evaluative questions are the hardest and the most useful, because they need a judgement backed by evidence.
2. Gather and organize evidence. A primary source was created at the time by someone involved (a letter, photograph, treaty, diary, film, government record). A secondary source interprets the past later (a textbook, a historian's book, a documentary). You need both. Organize your notes with a chart, timeline or cause-and-consequence web.
3. Interpret and analyse. Ask who made the source, when, why and for whom. What does it show, and what does it leave out?
4. Evaluate and draw conclusions. Weigh the evidence and reach a judgement you can defend.
5. Communicate and cite. Present your argument in a form that suits your audience (essay, presentation, podcast, infographic), and document every source.
Inquiry is a cycle, not a straight line. Historians often go back and revise their questions when they find new evidence.Citing your sources
University history departments in Canada usually ask for Chicago style with footnotes and a bibliography. Some courses accept MLA or APA. Whatever style you use, be consistent and give enough information for a reader to find the source.
A Chicago bibliography entry for a book looks like this:
- Hobsbawm, Eric. The Age of Extremes: The Short Twentieth Century, 1914–1991. London: Michael Joseph, 1994.
For a website, add the title of the page, the organization, the date published or accessed, and the URL. For an interview you did yourself, give the person's name, "interview by the author", the place and the date.
Primary or secondary?
A source is primary or secondary depending on your question. A 1995 newspaper article about the 1994 genocide in Rwanda is a secondary source about Rwanda, but a primary source if your question is How did Canadian newspapers report on Rwanda in the 1990s?
Worked exampleModelled example: Turning a topic into inquiry questions
Your topic is Japan's victory in the Russo-Japanese War (1904–1905). Write one factual, one causal and one evaluative question, and name one primary and one secondary source you could use.
- Factual: Where and when were the main battles fought, and how did the war end? (It ended with the Treaty of Portsmouth, 1905, negotiated with U.S. help.)
- Causal: Why were Russia and Japan competing for Korea and Manchuria? This asks for reasons: both empires wanted ports, railways and influence in Northeast Asia.
- Evaluative: How significant was Japan's victory for colonized peoples in Asia? This needs a judgement. It was the first time in the modern era that an Asian power defeated a European great power in a major war, and nationalists from India to China noticed.
- Sources: a primary source could be the text of the Treaty of Portsmouth or a 1905 newspaper report; a secondary source could be a historian's book on the war.
- Check: each question can actually be answered with evidence, and the evaluative one leads to an argument, not just a list.
Factual: How did the war end? Causal: Why did Russia and Japan compete for Korea and Manchuria? Evaluative: How significant was Japan's victory for colonized peoples in Asia? Sources: the Treaty of Portsmouth (primary) and a historian's study of the war (secondary).
Just for funA funny-but-true fact: the 1900 Olympic Games were held in Paris as part of the World's Fair and were spread over about five months. They were so mixed up with the fair's other events that some athletes reportedly did not know they had competed in the Olympics until years later.
Hands-on activityStart an oral-history file
You need: a notebook or a device for recording, and a family member, neighbour or family friend who agrees to be interviewed.
- Ask permission to record or take notes.
- Ask about one event from the twentieth or twenty-first century that they remember or that their family talks about (for example, a war, a move to Canada, the fall of the Berlin Wall, the attacks of September 11, 2001, or the COVID-19 pandemic).
- Prepare one factual, one causal and one evaluative question. Example: What happened? Why did your family decide to leave? Looking back, how did it change your life?
- After the interview, write a short note on the source's strengths (it is a first-hand account) and limits (memory changes over time; one person's view).
- Write a citation: Name, interview by the author, city, date.
What to look for: three different types of questions, a respectful interview, and a citation you could use in an essay. Keep this file: you will use it again in later lessons.
Your turn
1Name the two African states that were independent in 1900, and explain why one of them stayed independent.
Ethiopia and Liberia. Ethiopia defeated an Italian invasion at the Battle of Adwa (1896).
2What is the difference between a primary and a secondary source?
A primary source was created at the time by someone involved (letter, photo, treaty). A secondary source interprets the past later (textbook, historian's book).
3Write an evaluative question about the Boxer Uprising.
Example: How significant was the Boxer Uprising in weakening the Qing dynasty? It asks for a judgement, not just facts.
4Name the four historical thinking concepts.
Historical significance, cause and consequence, continuity and change, and historical perspective.
5Which country took the Philippines from Spain in 1898?
6Why do historians cite their sources?
So readers can check the evidence, to give credit to other people's work, and to avoid plagiarism.
Interactions between groups since 1900 (conflict and cooperation) and how key individuals and forces affected them.
More practice: warm-up
1In what year did the Boxer Uprising take place?
1900 (the movement began in 1899).
2Who ruled Mexico in 1900?
3Is a diary written in 1916 a primary or secondary source about 1916?
4Which citation style do many Canadian university history departments use?
Chicago style (footnotes and bibliography).
5Give one step of the inquiry process.
Any one: formulate questions; gather and organize evidence; interpret and analyse; evaluate and conclude; communicate and cite.
More practice: on your own
1Turn the topic "the Mexican Revolution" into a causal question.
Example: Why did Mexicans rebel against Porfirio Díaz in 1910? It asks for reasons.
2Explain why the same source can be primary for one question and secondary for another.
Whether a source is primary depends on what you are studying. A 1970s history book is secondary about the 1940s, but primary evidence of how historians in the 1970s thought.
3Why is Japan's victory over Russia in 1905 considered significant?
It was the first time in the modern era that an Asian state defeated a European great power in a major war. It encouraged nationalists in colonized Asia and made Japan a great power.
4Give one strength and one limit of an oral-history interview.
Strength: first-hand, personal detail that may not be written anywhere. Limit: memory can change, and it is one person's perspective.
5Write a Chicago bibliography entry for an interview you did with your aunt, Maria Silva, in Mississauga on March 3, 2026.
Silva, Maria. Interview by the author. Mississauga, ON, March 3, 2026.
Challenge
1Is "the age of empire" a good label for the world in 1900? Give evidence for and against.
For: European empires ruled most of Africa and much of Asia; the U.S. and Japan were acquiring colonies. Against: most of the Americas was independent, and resistance (Adwa, the Boxers, the Philippine-American War) shows empires were contested. A good answer: a useful label, but it hides resistance and independent states.
2Why might a historian writing in 1950 and one writing in 2020 tell the story of the twentieth century differently?
They know different outcomes (for example, the end of the Cold War), have access to different sources (opened archives), and are shaped by different values and questions, such as more attention to women, colonized peoples and Indigenous perspectives.
3Rank these questions from least to most useful for a research essay, and explain: (a) When did Japan win the Russo-Japanese War? (b) How did Japan win? (c) To what extent did Japan's victory change how colonized peoples saw European power?
(a) is a single fact; (b) asks for explanation; (c) is evaluative and requires an argument with evidence, so it is the most useful for an essay.
Check your understandingQuiz
1. Which African state defeated an Italian invasion in 1896 and remained independent?
2. Which of these is a primary source about the First World War?
3. Which is an evaluative question?
4. Which historical thinking concepts does overall expectation E3 stress?
5. Why do historians document their sources?
6. Which country took the Philippines, Guam and Puerto Rico in 1898?
For parents and teachersBig idea: This lesson opens strand E (The World since 1900) by describing the age of empire around 1900 and introduces the strand A inquiry skills used all unit: formulating questions (A1.1), gathering primary and secondary evidence (A1.2) and citing sources (A1.9), plus transferable skills (A2).
How to help: Be the interviewee for the oral-history activity, or help your teen find a relative or neighbour who is willing. Ask them to explain the difference between a factual and an evaluative question using a news story.
Common difficulties:
- Thinking "primary" means "better". Both kinds of sources are needed, and primary sources can be biased.
- Writing questions that are too broad ("What happened in the twentieth century?").
- Seeing 1900 only from Europe's point of view. Encourage examples from Africa, Asia and the Americas.
Expectation codes: Only some specific expectations for this strand could be confirmed online (A1.1–A1.4, A1.7–A1.9, E1.1, E1.2, E3.2, E3.3, E3.4). Where a lesson teaches an unconfirmed specific expectation, it is tagged with its overall code (A1, A2, E1, E2 or E3).