1.What factor contributed to Genghis Khan’s expansion of the Mongol empire?

A. He established a new social order that led to the creation of a stable government.
B.Inventions and innovations during his time of leadership helped industries to grow.
C.He led a ruthless military into foreign land, using powerful weapons to break down city walls.
D.He expanded trade routes by building a complex system of canals and waterways.

2.Which two cultures influenced the development of Southeast Asian culture?
A.Japanese and Korean cultures influenced Southeast Asia
B.Chinese and Japanese cultures influenced Southeast Asia
C.Much of Southeast Asia is separated from the rest of Asia by high mountains, making it a difficult place to invade.
D.Many Southeast Asian countries depended on their plentiful gold supply to make them wealthy.

3.Which belief system spread first from India to China and then to Korea and Japan, helping to create cultural unity in the region?
A.Daoism
B.Buddhism
C.Christianity
D.Confucianism

Sorry I put the second one on wrong

2.Which two cultures influenced the development of Southeast Asian culture?
A.Japanese and Korean cultures influenced Southeast Asia
B.Chinese and Japanese cultures influenced Southeast Asia
C.Indian and Korean cultures influenced Southeast Asia
D.Chinese and Indian cultures influenced Southeast Asia

I think it is.

1.C He led a ruthless military into foreign land, using powerful weapons to break down city walls.
2.C Indian and Korean cultures influenced Southeast Asia
3. B.Buddhism
But I'm not sure.