Explain the role of America in world war 1

Why did buffalo herds decline in the 1830s and 1840s? a. increased numbers of native american buffalo hunters b. increased demand on buffalo meat in eastern restaurants c. increased demand on water resources on the plains d. increased market for buffalo robes

What policy did "jim crow" laws put in place? black codes integration segregation 2. the supreme court case that established the doctrine of "separate but equal" was dred scott v. sandford plessy v. ferguson brown v. board of education 3. the supreme court case that overturned the doctrine of "separate but equal" wasdred scott v. sandford plessy v. ferguson brown v. board of education

One result of recent migration trends is that the workforce in europe has become