Answer:
because the river's annual flooding ensured reliable, rich soil for growing crops
Explanation:
In politics, the opposition comprises one or more political parties or other organized groups that are opposed, primarily ideologically, to the government (or, in American English, the administration), party or group in political control of a city, region, state, country or other political body.
Answer: Relations between the Soviet Union and the United States were driven by a complex interplay of ideological, political, and economic factors, which led to shifts between cautious cooperation and often bitter superpower rivalry over the years. The distinct differences in the political systems of the two countries often prevented them from reaching a mutual understanding on key policy issues and even, as in the case of the Cuban missile crisis, brought them to the brink of war.
Explanation:
Industrialization influences how people expect to live and how long they expect to live in society because industrialization brings together with itself also better healthcare and better medical supplies. Both of these things improve healthcare across the globe.
Answer: Option A is the correct answer: "an oath of loyalty and a pledge of military service."
Explanation:
The feudal system that existed in medieval Europe was based on lords who owned property and vassals who serviced the lords. The vassal's responsibilities included an oath of loyalty and a commitment to military service to the lords. The oath of allegiance, derived from the Latin fidelitas, compelled the vassal to always stay faithful to the ruler.
