USA HISTORY

Detailed explanation-1: -The common push factors are low productivity, unemployment and underdevelopment, poor economic conditions, lack of opportunities for advancement, exhaustion of natural resources and natural calamities.

Detailed explanation-2: -Social, political, and economic push factors cause citizens to be disappointed with life in the countries they were born in. Because of these factors, many left their homelands in search of a better life somewhere else. Many chose the U.S., making this country a “nation of immigrants."

Detailed explanation-3: -Examples of push factors include war, political instability, famine, and drought, among others. Examples of pull factors include political stability, lots of jobs, natural resources, better learning institutions, and better climate.

Detailed explanation-4: -Insufficient jobs or few opportunities, primitive conditions, desertification, slavery of forced labour, poor medical care, high death rates, and pollution are some of the push factors.