Answer:
When one nation has complete political and economic control another nation
Explanation:
Imperialism refers to the policy of the country in which a country extend its influence on other countries through colonizing its people on their lands, using its arm forces to invade an area of the country or control the country politically or economically. The main aim of imperialism is to gain power and superiority in the region and make its influence on the regional countries in world politics.
"An invasion from Morocco" is the one event among the choices given in the question that <span>marks the final stage in the collapse of the Songhai empire. The correct option among all the options that are given in the question is the last option or the fourth option. I hope the answer has come to your help.</span>
The Soviet Union banned many Western practices and limited freedom in East Germany.