During the Middle Ages Laws (1215) there were two major sources of laws: Cannon Law which came from the Church and statutory law which originated from which of
the following document?
O Justinian's Code
The Constitution
Magna Carta
O Hammurabi Code

One of the things that allowed native americans in mexico to settle cities larger than those in areas to the north was "b. the development of cities that were built by an earlier civilizations," since mexico had been the home of some of the world's most advanced civilizations before the columbian invasion

1) one variable is tested2) a control is used