The great ancient civilizations flourished around river valleys because the rivers produce rich fertile soil and a supply of water for irrigation of crops and human consumption. This allows for the agricultural production to be greater and it can sustain more people.
The imperialist country that was known to control the shaded territories that are in this map is great Britain.
<h3>
What is imperialism?</h3>
This is a term that refers to the take over of the resources that are contained in a foreign nation by another nation.
The imperialist nation would then have a say in the political and economical climate of the area.
Raed more on imperialism here: brainly.com/question/884452
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The Civil War<span> Trust's </span>history<span> article analyzing the reasons for secession as set forth in the Articles of Secession and Declarations of Causes.</span>