Answer: I'm pretty sure the answer is D.
Explanation: Hope this helps! Please tell me if im wrong.
<span>A system for exchanging currencies between countries. Because they need to be able to redeem the money they earned. Without that system Jiang would not be able to sell things with other Countries.</span>
The correct answer is imperialism
The term imperialism is used to refer to the practices of politics in which a nation sought to promote territorial, economic and / or cultural expansion over another nation. The use of the word imperialism can occur in current contexts, for example, when one country decides to intervene militarily in another.
The Eastern Front or Eastern Theater of World War I (German: Ostfront, Russian: Восточный фронт, Vostochny front) was a theater of operations that encompassed at its greatest extent the entire frontier between the Russian Empire and Romania on one side and the Austro-Hungarian Empire, Bulgaria, the Ottoman Empire and the German Empire on the other. It stretched from the Baltic Sea in the north to the Black Sea in the south, involved most of Eastern Europe and stretched deep into Central Europe as well. The term contrasts with "Western Front", which was being fought in Belgium and France.
isaac newton found out how gravity works.
galileo found out how stars moved and mapped them
copernicus found that the sun was centered in our solar system
