Answer:
<h2>b. It helped convince U.S. leaders to send american troops to fight in Europe.</h2>
Context/detail:
Public outrage in the US against the Germans had swept the nation a couple years earlier, following the sinking of the British ocean liner, Lusitania. A German U-boat (submarine) sank the Lusitania in May, 1915. Over 1,000 persons were killed, including more than 100 Americans.
Germany managed to stave off American entry into the war at that time by pledging to stop submarine attacks. But a couple years later they resumed such attacks. That was one factor that helped to convince the USA to enter the war. Then also there was the intercepted telegram (the "Zimmerman Telegram") that showed Germany was trying to secure Mexico as an ally against the United States. In April, 1917, the US declared war on Germany in response.
They prevented African Americans from becoming farmers. They prevented the migration of emancipated slaves. They promoted peaceful co-existence between blacks and whites. The effect of Jim Crow laws have on Southern society is: They created a racially segregated society.
Braceros worked on farms and on railroads, making it possible for the U.S. economy to meet the challenges imposed by the war effort. existed and viewed the Bracero program as a way for the U.S. to obtain cheap labor.