surplus: surfeit
Irrigation: inundation
division of labor: mass production( I'm not super sure about this)
fertile crescent: Middle East
silt:clog
Answer: Keeping Americans safe from other Americans
Explanation:
In 1954 the Supreme Court ruled that segregation in public schools was against the Constitution and so the NAACP went ahead to enrol certain black students in previously white only schools.
One of the places they did this was in Little Rock, Arkansas. There was a lot of opposition to the children attending school and the Governor of Arkansas called in the National Guard to prevent the children attending.
President Eisenhower then sent in Federal troops and federalized the Arkansas National Guard and charged them with protecting the black children and ensuring that they attend. The National Guard therefore protected the children and in doing so protected Americans from other Americans.
Answer:
Mostly because the death rate fell tremendously.
Explanation:
The main causes of population growth had to do with diet and hygiene and health care.
The Agricultural Revolution (which started in the 17th century) led to better food production and thus better diet and nutrition for people, so healthier lives.
The Industrial Revolution (beginning in the mid 18th century) pushed cities to create better sanitation methods to avoid cholera and other disease epidemics.
And the ongoing advances in medicine ever since the Scientific Revolution were doing their part also to increase lifespans.
Answer:
In Europe, the Crusades led to economic expansion; increased trade and use of money, which undermined serfdom and led to prosperity of northern Italian cities. They led to increased power of the monarchs, and, briefly, to increased power of the papacy.
