What was the primary way Chinese inventions were spread to the rest of the world? Prisoners told their captors how to recreate the inventions

Buddhist monks took the ideas to other parts of the world

Merchants along the Silk Road spread the new ideas across Asia and Europe

Marco Polo wrote about the new inventions in his book

C.  

Merchants along the Silk Road spread the new ideas across Asia and Europe

Explanation:

i think they came to washington to protest

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.