When did native americans first arrive in the americas

Brainliestttme : ) what demographic changes occurred after world war ii?

What explains the increase in life expectancy in botswana? a. the increased availability of jobs and an improved economy b. access to antiretroviral drugs, hiv/aids education, and widespread hiv/aids testing c. a series of military takeovers that stabilized the political system and led to education reform and increased literacy rates d. a recent military coup that led to an improved healthcare system select the best answer from the choices provided.

What was a major failing of the united states government under the articles of confederation?