What did it mean to be 'sold down the river'? O to be transported by boats only
O to be transported down the Mississippi River
O to be sold to a northern plantation
O to be sold for a reduced price

O to be transported down the Mississippi River

Explanation:

Hope this helps

For generations, the phrase "sold down the river" has been used to signify a profound betrayal. "River" was a literal reference to the Mississippi or Ohio rivers. For much of the first half of the 19th century, Louisville, Ky., was one of the largest slave-trading marketplaces in the country.

Explanation:

so it would be B

a historian who compares the expansion of political systems to the expansion of economic systems to the expansion of economic systems is organizing history by theme.

hope this : d

social status of early civilizations was based primarily on economic power.- true ( first choice)