Answer:
they began to change many things in life such as their hierarchy, views points of the world, especially in philosophical areas, got opportunities to create and admire talents of one another.
Explanation:
somethin' like that.
Answer:
an outcome with benefits that are greater than the costs
so b.
Answer:
They had cultural ties with them; British news/propaganda also swayed the American public opinion in favor of the Allies.
If I remember correctly the opium wars resulted in china being figuratively split up by european powers. So, I'd go with 4.
