Describe the consequences of westward expansion for native americans and the natural world of american west

Which of the following could affect the human population? a hurricane makes landfall on an uninhabited island. a deadly virus emerges that can pass from human to human. a civil war breaks out in italy. a solar eclipse occurs.

The 15th amendment to the u.s. constitution, ratified in 1870, deals with what issue? a. prohibition of alcohol b. voting c. declaring war d. free speech

List a few examples of city-states that practiced oligarchy in ancient greece