How do historians refer to the period of time that began with the scientific revolution and continues through today? A.
The dawn of globalization
B.
The Renaissance
C.
The Age of Machines
D.
The modern era

D.  The modern era

Explanation:

The term is modern era, although we can narrow it to late modern period, which began after the period of industrialization. That is why D is correct answer.

A is not correct because it doesn't refer to historical period.

B is wrong because it refers to period between 14th and 17th Century.

C. is wrong because it refer to period of first half of 20th Century mostly.

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.

demand is the need and oportunity to buy a given good or service.