Answer: D. The Demographic transition
Explanation: Demographic transition explains the association between population growth and economic development. It explains the high infant mortality and high birth rate associated with non-industrial, low technology and many developing countries and the low infant mortality, low birth rate commonly found in industrial, high technology and high level of education found in developed countries.
It is an historical overview which shows high birth rate in low industrial and developing countries and low birth rate in industrial and developed countries.
Erik Thorvaldsson, also known as Erik the Red (ir is believed he was called like that for being a redhead), was a Norse explorer, and it is said that he founded the first settlement in Greenland. He he was born in Norway, and was the son of Thorvald Asvaldsson (hence the name Erik Thorvaldsson).
The correct answer is the plow. When the plow was invented agriculture was made much easier which enabled people to settle around and make surplus of food. This enabled them to trade with others and increase the size of the cities and the rest is history.
To be subject to scrutiny or observation
According to the theory of mercantilism, a nation should regulate a nation's economy for the purpose of augmenting state power at a rival nation's expense. This was heavily present during colonial times, because the big colonial powers could regulate the trade between their colonies and other countries, therefore meaning they banned it, that way their colonies could only trade with them. This made the colonial superpowers much richer, while countries who did not have any colonies could not keep up.
