In which way did the invention of the cotton gin change the american south?
a
slaves in the south were required to perform less hard labor.

b
the south's farmland was overworked and its soil was ruined.

c
agricultural operations in the south were replaced by factories.

d
cotton production became much cheaper for southern farmers.

D

Cotton production became much cheaper for southern farmers.

Explanation:

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.