*will give brianliest*[06.01 mc]

how did eli whitney's invention affect the institution of slavery in the united states?

it decreased the demand for slave labor on frontier farms.
it decreased the demand for unskilled slave labor.
it increased the demand for slave labor in textile factories.
it increased the demand for slave labor to grow cotton.

Explanation:

One incidental aftereffect of the cotton gin's prosperity, in any case, was that it fortified slavery in the South. In spite of the fact that the cotton gin made cotton preparing less work concentrated, it helped grower procure more noteworthy benefits, provoking them to develop bigger yields, which thus required more individuals. Since servitude was the least expensive type of work, cotton farmers acquired more slaves.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

yes ap politics. what do you need?