1860s: The Republican Party and President Abraham Lincoln are known for their opposition to slavery, support of the Union of the States, and pro-business fiscal policies.

Today: The Republican Party and President George W. Bush are known for their social conservatism, tax cuts, and increased military spending.

1860s: Astronomical science is making major advances due to technology. For the first time, scientists are able to identify elements present in the sun's atmosphere.

Today: Technology allows astronomers to identify the furthest planetoid in our solar system, send robotic probes to the surface of the planet Mars, and see almost as far in space as the location of the "Big Bang" that is thought to have started the universe.

1860s: Homosexuality is entirely taboo, and few, if any, public personalities such as Whitman could admit to being gay without fear of severe reprisal from the government...