D. Conitive process; biological constraints
A divided opposition contributes to an increase of violence because it divides the people, government, etc. It leads to an increase of tension between different groups which in result, leads to an increase of violence.
$4.9 million
A $0.3 million deficit in 2015 has increased the debt from $5 to $5.3 million, and a $0.4 million surplus in 2016 has reduced the debt from $5.3 million down to $4.9 million at the end of the year.
The Open Door policy was written in 1899. The U.S. was interested in acquiring cheaper goods (mainly cotton) from foreign markets.
John Hays wrote this policy to protect the privileges among countries that were trading with China. He wanted countries to have equal access to ports open to trade in China, and to avoid a monopoly.
The first note in the Open Door Policy said that (1) each great power should maintain free access to a treaty port or to any other vested interest within its sphere.