Which of the following did carter do in his attempt to free the americans taken hostage by iran?
he bought more iranian oil.
he convinced us allies to boycott iranian goods.
he sought from the shah.
he freed millions of dollars of iranian assets.

In his attempt to free the Americans taken hostage by Iran, President Carter convinced US allies to boycott Iranian goods.

Carter, in April 1980, broke diplomatic relations with Iran and imposed a trade embargo, except for medicine and food. Iranian funds in the US were frozen and accounted for to compensate the hostages when they were released and to pay the demands of US companies against Iran.

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.