The Warren Court reached a 6-2 verdict in favor of Baker. A lack of political question, previous court intervention in apportionment affairs and equal protection under the 14th amendment gave the court enough reason to rule on legislative apportionment. Court gained power to rule on apportionment laws.
Baker v. Carr and subsequent cases fundamentally changed the nature of poiltical representation in the United States.
Explanation:
nearly every state was required to redistrict during the 60s, often several times. This re-apportionment increased the political power of urban areas with greater population and reduced the influence of more rural areas.
There are several ways in which the U.S. increased western settlement in the 1800's, but by far the most important action was the creation of the Homestead Act.