8. factors contributing to the westward expansion of the u. s. include

(select all that apply.)

-the cold war

-the revolutionary war

-increased immigration

-the desire for adventure, land, and riches

-the discovery of gold

-the homestead act

Use your vocabulary words to complete the sentences below. more of the world's population is now concentrated in heavily populated urban areas known as a this is quite a contrast from the past when or native groups were either farmers or — hunters and gatherers who moved between places in search of food. advanced technology has led to the integration of world economics and cultures, in the world's more developed countries. this integration requires , the responsible use and management of natural resources.

In a economy individuals answer the three basic and the central authority or leaders have little say in the economy.

Adesert is an example of a(n) and the gobi desert is an example of a(n) a. ecosystem biome b. biome ecosystem c. ecosystem climate d. climate biome