Which law made it harder for some europeans to immigrate to the united state's and easier for others?

Which answer best explains the overall impact of the chicken on native american populations in the new world? negative; it destroyed much needed grain crops neutral; it was not well adopted by native americans insignificant; other animals were more quickly accepted positive; it brought a good source of protein to the native american diet

Me i really need which of these was an accomplishment of the han dynasty? the invention of the seismograph finding a water passage to europe the invention of the ballpoint pen the invention of the abacus

Explain why american modernist writers might have perceived the world as chaotic in the early part of the 20th century. should be at least 250 words.