Which was a common sociopolitical/economic feature of colonial america?

a. difficulty in the expansion of agriculture
b. commercial production of finished metal parts for locomotion
c. significant improvement of infrastructure, especially roads
d. none of the above is correct.

d. None of the above is correct.

Explanation:

In colonial America, labor and capital are at scarce, however, supply of land is very high. In 18th century, about 90% of colonial american population have earned major portion of income through agriculture. Colonial american produce higher output per labor, which lead them to a better living standard than many people living in developed countries. The most important industries of colonial America are Tobacco, ship´s store and ship building.