Answer:
Increasing involvement in world affairs.
Explanation:
The stand of the United States was crucial in world politics and it was seen in the events of the early twenties. While maintaining neutrality it supplies the allied forces resources and earned huge profits. Its entry to world war one is considered a major turning point. Moreover, the sway economic depression have felt globally. Internationally its stand became strong and so thus its polity was mainly concerned with wold affairs.
These are some of the presidents's not many people remember:
<span>Herbert Hoover
Martin Van Buren
Warren Harding
Chester Arthur
Millard Fillmore </span>
I believe your answer would be C! Hope this helps =]
"Bleeding Kansas", this was a fight between North and South over Kansas and Nebraska to be a free or slave state