How would the existence of a canal in Central America help Roosevelt achieve his goal? Central America is surrounded by the Pacific Ocean. A canal would give the United States access to the Pacific Ocean. A canal in Central America would make it easier to reach the Pacific Ocean from the eastern coast of the United States.

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