During which decade did an economic boom and bust occur in the United States? 1900s 1910s 1920s 1930s

C the bust of the economy and stock market happened during the end of the "booming" twenties.

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.

hello there, can you add the "following" multiple choices