After the revolution, the practice of enslaving African Americans was illegal.
Two European empires were dismantled.
Because the U.S declared that the people of Kansas and Nebraska can vote on to be a slave or free state, in this case northerners rushed there to make it a free state, this whole thing also caused bleeding Kansas
Boosted economic prosperity through expansion of trade especially due to the rapid expansion and development of the 7000 mile silk road. The building of this road ensured that trade in farm produce developed a great deal.
Answer:
the answer is A, fear. because the poster strikes fear
