Answer:
Andrew Jackson's presidency was from 1829 to 1837, and historians generally regard the Jacksonian Era as an extremely important period in the nation's history. The three greatest challenges President Jackson faced were the Eaton Affair, Indian Removal, and Nullification.
Explanation:
<span>Popular sovereignty is the answer
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A river valley civilization is an agricultural nation or civilization situated beside and drawing sustenance from a river. A "civilization" means a society with large permanent settlements featuring urban development, social satisfaction, specialization of labor, centralized organization, and written or other formal means of communication. A river gives the inhabitants a reliable source of water for drinking and agriculture. Additional benefits include fishing, fertile soil due to annual flooding, and ease of transportation. The first great civilizations, such as those in Mesopotamia and Ancient Egypt, all grew up in river valleys. Tigris River flourished near Mesopotamia civilization and river nile flourished near civilization of Egypt.
<h2>ꜰᴏʟʟᴏᴡ ᴍᴇ❤</h2>
Answer:
B) Mountains protected the region from invaders and D) Rivers flooded, providing fertile soil and water for irrigation.
Explanation:
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