Answer:
Prime minister of Britain Winston Churchill, the Soviet Premier Joseph Stalin and, U.S. President Franklin D. Roosevelt
Black holes themselves can not be seen, nor do they leave trails (since emptiness does not have to be caused by a black hole), but there is evidence for black holes: scientists can see the effects of their gravity on nearby stars. The answer is B.
Answer:
The stages of civilization given below.
Explanation:
There are different stages or phases people have to cross, which led to the rise of civilizations in the world. The beginning starts with people cultivating crops and domestication of animals. Farming leads to food surpluses which help people to settle in one place and cause an increase in population. As the population grows gradually, settlements grow larger. With a growing community, people become involved in other works like artisans, soldiers, guilds, etc. Slowly settlements grow into cities with flourishing trade and commerce. To control order and put restrictions government formed in the cities. There all this led to the rise of civilization.
They helped maintain order in society and he mediated over disagreements over business contracts.
