which factors led to the development of the four river-valley civilizations of mesopotamia, egypt, the indus valley, and china?
choose all answers that are correct.
a. the worship of many nature gods
b. the presence of rivers
c. a surplus of food
d. the building of villages and cities
e. the need to unite for protection from enemies

Briefly discuss radical republicans' characteristics and their roles in advancing rights for black americans.

Excerpt from w. e. b. du bois jon reese 4 du bois was one of the first male civil rights leaders to recognize the problems of gender discrimination. he was among the first men to understand the unique problems of black women, and to value their contributions. he supported the women's suffrage movement and strove to integrate this mostly white struggle. he encouraged many black female writers, artists, poets, and novelists, featuring their works in his crisis magazine and sometimes providing personal financial assistance to them. the cause was that w. e.b. du bois encouraged many black female writers, artists, poets, and novelists. what was the result? think about cause-and-effect relationships.

You have been asked why scholars use the word "conservative" to describe ancient egyptian pictorial arts. how do you answer the question? describe the egyptian canon of proportion and how it was applied. make sure to discuss the significance of the amarna period and explain its formal and iconographic characteristics. why does a change in religion bring about a change in art in ancient egypt?