The united states eventually stop supporting South Africa because : South Africa began taking arms and funds from the soviets.
Back then, United States was in the middle of cold war with the soviets union, and this showed that Soviet has implemented its influence in south africa
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The main reason why the border states did not secede in 1860-1862 was because they were concerned with the large amount of military coercion that was taking place in the South, and they felt that the South was ultimately unjustified in removing itself from the Union.
Rockoff estimates the total cost of World War I to the United States at approximately $32 billion, or 52 percent of gross national product at the time. He breaks down the financing of the U.S. war effort as follows: 22 percent in taxes, 58 percent through borrowings from the public, and 20 percent in money creation.
Answer
<u>B. Progressives believed that the assimilation of immigrants would make them less loyal citizens</u>
Explanation
Progressives strongly believed in American ideas and progress. These individuals believed that ethnics and class problems were as a result of self/private interest over the interest of many people that led to corruption and a spoiled political system. Progressives proposed the unification of all classes and ethnic groups to form a single middle class with people with similar traits.