Help me with this History homework I am stuck

The map shows information about river valley civilizations. which feature of this map best the reader determine the distance between two places?

Why did some people support supply-side economics and others opposed it? it addressed the supply of goods and ignore demand. it called for large tax cuts for the wealthy. forigen production played a significant role in the plan. the program called for increased government spending.

Plz where was the inca civilization located? a. in and around the andes mountains of south america. b. central america in southern mexico. c. the caribbean islands. d. the central valley of mexico.