When a researcher can make a strong inference that one variable caused another, the study is said to have validity.

The most likely location of the inaugural address was in what country?

Which of the following was a key accomplishment of the people of songhai? a. they had a strong military and became the largest empire in west africa. b. they established a center of islamic scholarship. c. they worked with iron and prospered from the gold-salt trade. d. they dominated in the trade of ivory, enslaved people, and animal skins.

What describes the social structure of the south in the antebellum era? check all that apply. a: mass immigration b: small towns c: no organized religion d: little or no organized education e: slow population growth