Answer: i think it’s to contain communist aggression
Explanation:
The answer is A. Black sea! hope this helps!
In 1862, Congress passed the Pacific Railway Act, which authorized the construction of a transcontinental railroad The first such railroad was completed on May 10, 1869 Four of the five transcontinental railroads were built with assistance from the federal government through land grants.
Middle Ages.
The period of European history extending from about 500 to 1400–1500 ce is traditionally known as the Middle Ages. The term was first used by 15th-century scholars to designate the period between their own time and the fall of the Western Roman Empire.
Got this Google I hope this helps :)
In general, "<span>d. an area free from warfare</span>" is not essential in building a new civilization, since in order to build a civilization in the first place you need a surplus of food and warfare is almost inevitable.
