Answer:
1313-1341 CE) proclaimed Islam as the official religion of the Golden Horde.
Explanation:
I believe that the answer is either Britain or Mexico. The answer could be Britain because by this time the British weren't involved with the territories near the US. The answer could be Mexico because at that point in time Mexico might not have been considered a country yet.
Mexican War. The Mexican War brought Manifest Destiny almost to a close, Gadsden Purchase would finish it. With all the land though, it also brought the question of slavery back into question. An uneasy balance had been found prior, but the new open land meant that slavery had a place to expand into. The issue had never been completely handled. It was poorly bandaged up and passed along. The legislature would have to grapple once again with the issue. This time though it would lead directly to Civil War.
I would say one of the biggest technology developments that influenced US culture is the Television, it allowed for the spread of news and politics.
The answer is helped. Trade was foundational to the growth of cities because it helped. Guaranteed an exchange of goods and idea made reliance on other civilization possible showed military strength gave people jobs.