What separates an eon into eras?

a) changes in rock layers

b) spieces extinctions (changes in types of organisms)

c) 300 million year chunks

d) types of plants and animals

Who was sent to explore Louisiana Territory? Meriwether Lewis and William Clark Thomas Jefferson and Andrew Jackson Daniel Boone and Zebulon Pike James Polk and Nathaniel Hawthorne

What are key terms of the treaty of paris?

When civilizations first moved from hunting-and-gathering subsistence to agricultural subsistence, people were able to cultivate other aspects of their culture. Describe three aspects of society that emerged from this transition.

List some of the cardiovascular devices and procedures that Michael DeBakey invented and/or prevented?

Why in the Mississippi Delta did the Chinese come to Mississippi?

The voting rights act of 1965 eliminated A. Barriers to voting for women B. literacy test as prerequisites for voting C. proof of residency as a condition for voting D. Age discrimination in state voting laws

When was the confederate flag come in existence

How do the soldiers feel about the summer of 1918?

Which of the following beliefs has been central to egyptain religion

During the American Revolution, Loyalists in Florida ... A) fought in the Siege of Pensacola. B) led raids on towns controlled by the British. C) fought to become a French colony. D) led raids on towns sympathetic to patriots.