The best answer is A. Keynesian economics refers to the practice of pumping money into a country's economy. In Keynesian economics that money is usually acquired from taxpayers, loans, bonds, and additional currency printing. The theory is that spending money on things like infrastructure projects (building roads, power plants, dams, etc.) creates jobs, which helps get money circulating in the economy again, which eventually pulls a country out of economic stagnation.
The correct answer is B, as the Powhatan organized a Native confederacy.
Powhatan is the name of a Native American tribe, the main one of a powerful confederation of tribes they dominated, called Tsenacomoco. They spoke the Algonquian language, and lived in what is now the state of Virginia at the time of the first encounters between natives and English.
The original six tribes that constituted the Tsenacomoco confederation were the Powhatan themselves, the Arrohatecks, the Appamattucks, the Pamunkeys, the Mattaponis, and the Chiskiacks. To this group the Kecoughtans were added in 1598. Another tribe closely related to all these, who spoke the same language, were the Chickahominy, who managed to preserve their autonomy from this confederation.
Because iron and steel-making at the time consumed more coal than iron ore, the steel mills moved closer to the coal mines to minimize transportation costs
Christiaan huygens he is the one who invented the clock
