1914 to 1991: two world wars, the Depression and the New Deal, the home front, the bomb, containment, Korea, Cuba, Vietnam and the fall of the Wall. Study cards, hints, a practice quiz at three levels, and four workshop activities that check themselves.
1914. Europe goes to war and the United States deliberately stays out of it for three years.
In 1914 the United States wanted to stay out of the world. By 1945 it was running half of it. Every event in this unit is a step in that turn — and the second half of the unit is what that new role cost at home.
What people get wrong
⚠️People often think…
The United States fought in World War I from 1914.
It entered in 1917 — three years late, after unrestricted submarine warfare and the Zimmermann telegram. The same pattern repeats in the second war: Europe from 1939, the United States from 1941.
US in 1917 and 1941. Always late.
⚠️People often think…
Roosevelt was president when the stock market crashed.
HOOVER was president in October 1929 and for three more years. Roosevelt took office in March 1933, at the bottom, and brought the New Deal. Getting this backwards scrambles every cause-and-effect question in the unit.
Hoover at the crash, Roosevelt at the bottom.
⚠️People often think…
The New Deal ended the Great Depression.
It eased the suffering and rebuilt the system — banking rules, Social Security, labor rights, much of which is still here. But unemployment stayed high until wartime production absorbed it. The WAR ended the Depression; the New Deal reformed what came after.
The war ended it. The New Deal reformed it.
⚠️People often think…
The Truman Doctrine and the Marshall Plan were the same program.
One is a promise, the other is a budget. Truman Doctrine = the commitment to support countries resisting takeover. Marshall Plan = the actual billions rebuilding Western Europe. NATO is a third thing again: the military alliance.
Promise, money, alliance — three things.
⚠️People often think…
The Berlin Wall falling and the Soviet Union ending were the same event.
The wall fell in 1989; the Soviet Union dissolved at the end of 1991. Two years of enormous change sit in between, and questions about the end of the Cold War often turn on which of the two a document is describing.
Wall 1989, Soviet Union 1991.
⚠️People often think…
The home front during the wars was mostly a story of unity.
It was both. Enormous mobilization and shared sacrifice — and at the same time Japanese American incarceration, segregated units, and the Double V campaign demanding victory abroad and at home. A full answer holds both halves.
Mobilization and injustice, at the same time.
Worth knowing cold
Containment, in four pieces
These four get swapped constantly. Each one is a different KIND of thing — a promise, money, an alliance, a wall.
Truman Doctrine (1947)The PROMISE — the United States would support free peoples resisting takeover. Words, and a policy.
Marshall Plan (1948)The MONEY — billions to rebuild Western Europe, on the theory that prosperous countries do not turn communist.
NATO (1949)The ALLIANCE — an attack on one is an attack on all. This is the military commitment, not the aid.
Berlin WallBuilt 1961, fell 1989. The Soviet Union itself dissolved in 1991 — two years after the wall, not the same event.
War, boom, bust, Deal, war, Cold War
1Watch one
Why is the Marshall Plan usually called a Cold War weapon rather than charity?
Start with the theory behind containment: communism spreads where people are desperate.
Western Europe in 1947 is rubble, hungry, and politically unstable.
So rebuilding it quickly removes the condition communism was expected to grow in.
The aid was real and the strategy was explicit. Both are true at once. ✓
2Do one with me
Fill in the dates and the pieces.
The United States entered World War II in
The president at the 1929 crash was
The Berlin Wall fell in
💬One sentence, then you move on
Why did the war end the Depression when the New Deal had not?
3Try one
Which piece of containment was the military alliance?
I want a hint first
It is the one where an attack on one member counts as an attack on all of them.
💬Last one — then you're done here
Why can the home front be a story of unity and injustice at once?
Where this goes
Where this lives
Why Social Security exists, why the United States has troops in dozens of countries, why NATO is in the news whenever a border is threatened.
What this feeds
Next unit is civil rights to today — the demand that the promises be kept at home.
Name one thing from the New Deal that is still around.
One card at a time — tap “Show me” to check yourself, then Next. Start at Foundation; when those feel easy, climb.
Helpful Hints
🧭 The story in one line
A reluctant war (1917) → boom (1920s) → bust (1929) → New Deal (1933) → a total war (1941–45) → superpower → forty-five years of Cold War → 1991.
War, boom, bust, Deal, war, Cold War, wall falls.
🤝 The one idea
In 1914 the United States wanted to stay out of the world. By 1945 it was running half of it. This unit is how that happened — and what it cost at home.
⚠️ Traps the test loves
U.S. enters WWI in 1917, not 1914. U.S. enters WWII in 1941, not 1939.
Hoover was president at the crash. Roosevelt brought the New Deal.
The WAR ended the Depression. The New Deal eased it and reformed the system.
Truman Doctrine = promise of aid. Marshall Plan = the money. NATO = the alliance.
Berlin Wall: built 1961, fell 1989. Soviet Union dissolved 1991.
📐 Containment in action — the chart
Year
Event
How it contained
1947
Truman Doctrine
aid to Greece and Turkey
1948
Marshall Plan
rebuilt Western Europe so it would not turn communist
1948–49
Berlin Airlift
fed West Berlin through a Soviet blockade
1949
NATO
an attack on one is an attack on all
1950–53
Korean War
held the line at the 38th parallel
1964–73
Vietnam War
tried to hold South Vietnam — and failed
🎯 How the test will ask
A graph of unemployment 1929–1941 — “when did it peak, and what ended it?”
A photograph or poster from the home front — “what is it asking people to do?”
A short excerpt from a speech — “which policy is this?”
A civil liberties case — “what was restricted, and was it justified?”
A Cold War event — “how is this an example of containment?”
✅ Before the test, can you…
Give two reasons the U.S. entered each world war?
Separate the trigger of the Depression from its causes?
Name three New Deal programs that still exist?
Explain Executive Order 9066 and what was wrong with it?
Define containment and give four examples?
Give three reasons the Cold War ended?
Pick your level
Look back at anything you missed — the hint that appeared is exactly what to reread tonight.
How sure did you feel?
Workshop
Work like a historian: put 1917 to 1991 in order, graph the Depression, read Roosevelt’s Four Freedoms line by line, then grade the New Deal.
Your practice never leaves this device. There is no account and no sign-in. Your work is saved in this browser only, and you can erase it whenever you want.
Your practice record — saved on this device
This is your record of the module on screen — it stays here and goes nowhere. Independent means you got it right on the first tap; supported means you got it after the explain-and-retry, or marked ‘I had it’ on a revealed answer. Both count, and neither is a grade. If your teacher asks, copy the row or show them this screen.
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The answer key is for a teacher: it prints only from here, for the unit on screen. Print the study packet prints the study pages and a blank quiz — never the answers.