The first organized opposition to slavery as an institution emerged in the late century.

Eighteenth Century, is the right answer.

Explanation:

Abolitionism was a movement that began in the United States throughout the American Civil War to emancipate slavery in the U.S. It was the first movement that opposed the Atlantic slave trade. The 18th century witnessed the huge shipping of slaves from Africa in the Americas. This was also the time when Georgia incipiently eliminated slavery in its territory and thereon abolition became a part of the First Great Awakening in the Thirteen Colonies of America.

the answer is b. osage.

answer; /// i do believe that the correct answer is (a); a farming tribe that settled primarily along the mississippi and arkansas rivers;