Answer: A
Explanation: The French and Indian war was a Diaster for France and resulted in them Losing the war. They had signed a treaty with Great Britain or the UK. They agreed to give up all of their land in North America to the East. They had started the war over the Ohio River Valley Area.
C.global economy
Global economy is the best choice because it says "each country's economy links to other countries economies"
A river valley civilization or river culture is an agricultural nation or civilization situated beside and drawing sustenance from a river. A "civilization" means a society with large permanent settlements featuring urban development, social satisfaction, specialization of labor, centralized organization, and written or other formal means of communication. A river gives the inhabitants a reliable source of water for drinking and agriculture. Additional benefits include fishing, fertile soil due to annual flooding, and ease of transportation. The first great civilizations, such as those in Mesopotamia and Egypt, all grew up in river valleys.
