What role did Marco Polo serve in the Mongol Empire? Marco Polo provided military tactics to Genghis Khan.
Marco Polo worked as an administrator for 17 years.
Marco Polo ran one of the khanates in the region.
Marco Polo wrote a book about Kublai Khan.

a is true because it know the force.

ps maybe give us more info?

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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.