D Although the U.S. had ramped up its industry during the first world war, it still did not have its full industrial capacity maximized until 1942 during world war 2. It was not "the" world leader in industry, however it was on the top of the list
<span>Basically, at one point in time while going westwards they reached states owned by Mexico, not just Native wildlands. There had to be a war then to conquer it to reach the sea. This divided people on whether or not people should fight Mexico. Another thing was that the expansion was at first mostly southern, which meant that more and more there were slave states, so they also divided on that and had to take in more northern places in to neutralize slavery influence.</span>
Answer:tyrant
Explanation:china didn’t believe so