It’s C, Britain promote entrepreneurship
I know that manifest destiny was the mindset of Americans that they were destined to stretch from coast to coast.
The Louisiana purchase was during that time. Napoleon didn't have the troops to keep Louisiana so he sold it to us for cheap.
It was the "B. Battle of Iwo Jima" that was one of the most devastating for U.S. Marine Corps, since this was a five-week-long battle waged by the US against the Japanese that was one of the bloodiest in the entire war.
Yes the British did have a large number of merchants