The policy that explains why troop levels were changing from 1968 to 1972 is Vietnamization.
<h3 /><h3>What was Vietnamization?</h3>
This was a policy by the U.S. government under President Nixon that saw the gradual reduction of troops in Vietnam.
At the same time that American troops were withdrawn, South Vietnamese soldiers were given increased American military aid to help them fight the Vietnam War on their own.
Find out more on Vietnamization at brainly.com/question/1260167.
The mercantilism policy served to increase tensions and conflict between great
Britain and its American colonies. the policy,coined by Adam smith was the practice by several European countries to allow exports and discourage import, hence exports were encouraged from Great Britain but imports were not from the colonies.
Answer,
It resulted to soil erosion,landslides and desertification.Mangoes tree planting helped to protect the soil and the trees grew maturity and farmer would earn income from selling mangoes.
The correct answer is A. Technological advances such as s<em>team power, air brakes, automatica lubricators and steel tracks</em> have affected the railroads very positively, since it has made it possible that the rail network could become a safer, more efficient and more reliable means of transportation for goods.
