During colonial america , there was an abundance of laborers
a. true b. false

The correct answer is - a. True.

During the colonial times in America, the labor force was in abundance. The laborers were consisted of both the European settlers and the African slaves. Most of the economy was based around the agriculture, so most of the people were farmers in this period. The poorer and middle class people were working on their lands alone, or were payed to work on the farmlands of the richer people. The richer people though preferred to buy African slaves, and the reason for that was that after the initial cost of paying to get possession of them, there were no costs for them apart from giving them food.

isaac newton first proposed that earth was not perfectly round. instead, he suggested it was an oblate spheroid—a sphere that is squashed at its poles and swollen at the equator.

the idea of the earth being a flat disc is also inconsistent with the fact that a given lunar eclipse is only visible from half of the earth at a time. the only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient greeks deduced that this must mean the earth is spherical.

i believe your answer is d)