During the third century, the roman army hired several professional foreign soldiers called
a. pirates
b. mercenaries
c. legionnaires
d. missionaries

The correct answer is: "mercenaries".

By definition, a mercenary was a type a soldier who was hired to participate on a conflict or to conduct certain specific tasks, but who was not part of the regular army or of any military force controlled by the goverment.

In the late Roman Empire, authorities found it difficul to raise soldiers from its citizens, so they contacted with barbarians to constitute its armies. Previously,  these were romanized

frederick the great and the war of austrian succession. frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. he also declared himself king of bohemia, and maria theresa sent troops to retake bohemia. in august he led 80,000 of these men across the frontier into bohemia, his

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.