Which made is possible for mongol armies to conquer chinese walled cities

A) mongol archers on horseback

B) cannons and other new weapons

C) mongol spies and siege engines

D) famine and civil war inside china

Psychologists have used three perspectives in their efforts to explain motivation. these include an emphasis on optimal arousal, a hierarchy of needs, and

Witch of the following is an example of governments role in promoting social standards?

Describe how young children begin to gain independence.

How many soldiers fought in the continental army?

When Ms. Anderson has her students work in groups, she always assigns one group member to the role of mediator. The main purpose of the mediator is to facilitate discussion among group members if a conflict occurs.

Infants about 6 to 9 months in age experience crying and fussing when their parents leave and they are left with the baby-sitter. this phenomenon is known as

An organism must purposefully model a behavior in order for others to learn from it. True or false?

Explain how Slavery influence the economy of southern colonies

Survey, November (Voting) Supplement, 2000-2006. According to this chart, people in what age group were least likely to vote in the 2000 presidential election?

In a study comparing the memory spans of preschool and elementary school children, the latter group consistently scored better. This apparent increase in memory span with age could be explained partly by how