12. If a West African trader chose not to pay the taxes to pass through Ghana, what might the opportunity cost of this decision be?
A He may have to pay taxes in a different area.
B He might not get to speak to the king about his concerns.
C He would not be allowed to use Ghana's port on the Atlantic coast.
D He may not have access to the gold and salt of West Africa.

for this case we have the following equation:

we apply distributive property to the terms within parentheses.

subtracting 2 on both sides of the equation:

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.

cuba is a multi-ethnic nation