Letters would be an example of a primary source
Answer:
just search it up. is it a worksheet that someone else made other than your teacher?
Explanation:
That could go both ways, maybe they didnt own a plantation or have use for a slave. But they still could support it. Or, they could be completely against it, and think its completely wrong and dehumanizing, they could help runaway slaves get to the north.
An increase in efficiency
Herbert Hoover, who in World War I served as head of the U.S. Food Administration and became know for his humanitarian efforts in Belgium during the war.
