chapter 4 sec. reveiw

1)tigris&euphrates,indus, hwang ho
2)nearly 1/3 of earths land, over 3 billion
3)himalayan moutain system, northern plains and deccan plateau
4)hinduism and the caste system
5)maurys
6)siddhartha gautama
7)Guptas
8)mougal empire
9)British East India Company
10)William Carey
11)westernization and christianity
12)Mahatma Gandhi 1869-1948,Jawaharlal Nehru 1889-1964
13)Indira and Rajiv Gandhi
14)they made the number zero, algebra, and arabic numbers