USA HISTORY

Detailed explanation-1: -Evolution that occurs over a short period of time is known as microevolution. It might take place in just a couple of generations. This scale of evolution occurs at the level of the population. The Grants observed evolution at this scale in populations of Darwin’s finches.

Detailed explanation-2: -In the fields of history and political science, a revolution is a radical change in the established order, usually the established government and social institutions.

Detailed explanation-3: -The first was the Industrial Revolution which began in the late 18th century; the second, the Demographic Revolution that started in the late 19th; and we are now in the midst of a third, a Happiness Revolution, taking off in the late 20th century.

Detailed explanation-4: -It is usually violent and begins with a rebellion of the people. Revolution occurs when large masses of people decide to take power from a government that treats its people unfairly. Revolution, which means “turning around, ” changes a government’s social, economic, and political policies.