If I am not mistaken, it was the space program also know as the Apollo Program a.k.a Project Apollo
It would be "industrialization," that was a significant factor in both the german wars for unification and United States' Civil War, since Industrialization led to an irreconcilable economic split between two more major segments of each area.
Answer:
1. Frontier is a transit zone where explorers, pioneers, and settlers come.
2. In America is considered to be a free land where the settlement is very low, only two persons per square mile.
Explanation:
Generally speaking, it is the region on the border of the settled area. The population that represents this movement of frontiers usually moves from east to west.
The best example for frontier is the border that separates Canada and the USA.
In the year 1838, 16,000 Native Americans were marched over 1,200 miles of rugged land. Over 4,000 of these Indians died of disease, famine, and warfare. The Indian tribe was called the Cherokee and we call this event the Trail of Tears<span>.</span>
