Answer:
Direct causality can be drawn between nationalism and war. Nationalist groups within a state who desire their own independent state, may conduct regular or irregular warfare in order to forcibly persuade a state to grant them independence.
As I am thinking you mean "Producers" when you say "Sellers" I am going to go with, Yes. You are correct it is Supply.
(Also the other one is called Demand not price)
Answer:
American imperialism consists of policies aimed at extending the political, economic and cultural influence of the United States over areas beyond its boundaries. Depending on the commentator, it may include military conquest, gunboat diplomacy, unequal treaties, subsidization of preferred factions, economic penetration through private companies followed by intervention when those interests are threatened, or regime change.
Explanation:
B farming produce a surplus of food
There were many causes of the crusades including political, economic, and religious factors. However, the crusades were a major conflict between European Christian forces and Muslim armies from Western Asia who fought for control of the Holy Lands that had importance to both Christians in Muslim. The control of these lands brought power, prestige, religious importance, and also economic gains to whichever force controlled these lands.