It’s d or b I think cause I did this befor
Answer:
Evidence, clues, or pieces of the past
Explanation:
They need some way of knowing, so they study evidence,clues, and pieces of the past to figure out history.
The government refused to pay, citing Depression-era budgetary restrictions. When most of the veterans refused to leave their shacks, Hoover sent in U.S. Army Chief of Staff Douglas MacArthur (1880-1964) to evict the so-called Bonus Army.
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This was granted by an initiative.
German use of submarines to blockade Britain during World War I led to the United States entering the war. The correct option among all the options that are given in the question is the fourth or the last option. before this incident occurred, the United States did not want to enter the war. I hope this helps you.<span />