Hi there!
The innovation that had the greatest impact on westward migration was d. transcontinental railroad.
Your Answer would be D, Hope This Helps
Libel
Publishing false statements knowingly is referred to as libel. This differs from slander which is defamation of character expressed verbally.
Though the US constitution contains an amendment protecting freedom of the press, this amendment does not protect people from false information. The Supreme Court has not allowed people to report false information in particular about individuals that ruin their reputation or defame their character to be protected by the First Amendment.
Following the war art generally moved away from realistic to "interpretational", since many artists were beginning to challenge the status quo of art that had existed for hundreds of years prior.