The correct answer is A.
Feudalism is a political system which was prevalent in Europe between the ninth and fifteenth centuries. The majority of privileges and rights were offered to the Upper class and level of the society. The King ruled and owned everything and had total control over all. His vassals (knights) were given some small parts of land but in exchange, they had to provide military protection. The serfs were lent land and they had to provide food and services to the upper classes.
The correct answer to this open question is the following.
In the late 19th century and the beginning of the 20th century, a group of rich and influential lawyers in Santa Fe, New Mexico, amassed fortunes through bribery and corruption acts such as frauds in selling land. They were known as the "Santa Fe Ring."
These corruptive actions generated the ire of people in Santa Fe, initiating the Lincoln County War on February 18, 1788, after the assassination of rancher John Tunstall. Santa Fe lived a period of violence and confrontations during those years.
Neolithic people developed systems of mathematics for reasons of travel for reasons of trade, for reasons of buying stuff from other people in general. Another reason was their natural curiosity which needed to be satisfied.
