Why did they call the time between 1920-1941 the age of isolationism for the us

United States made little to no business or interaction with Europe

Explanation:

1920-1941 were the years United States mostly kept to itself. The government refused to go into any European conflicts. That changed with the start of World War 2 in 1941 when the Japanese Airforce bombed the American Pacific Naval Base Pearl Harbor sinking USS Arizona, USS Oklahoma, USS Nevada, USS California, USS West Virginia, USS Cassin, USS Downes, USS Oglala and several other ships. In total 18 ships were sunk and 2,403 Americans were killed and 1,143 were wounded

stone age, iron age, olden days, prehistory

explanation:

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here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)