Which of the following best describes the changes brought to world populations as a result of the european colonization of the americas? a. the african population nearly doubled, the european population dropped greatly, and millions of native americans were sent to europe as slaves. b. the native american population nearly doubled, the african population dropped greatly, and millions of europeans were sent to africa. c. the african population nearly doubled, the native american population dropped greatly, and millions of europeans were sent to the americas as slaves. d. the european population nearly doubled, the native american population dropped greatly, and millions of africans were sent to the americas as slaves.

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.

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.