The Wikipedia page on the American Civil War provides a comprehensive overview of the war that took place in the United States between 1861 and 1865.

Antoinette Louisa Brown, later Antoinette Brown Blackwell (May 20, 1825 - November 5, 1921), was the first woman to be ordained as a mainstream Protestant minister in the United States.

Charles Darwin was an English naturalist and geologist, best known for his contributions to the theory of evolution.

Sir Charles Lyell, 1st Baronet, (14 November 1797 - 22 February 1875) was a Scottish geologist who demonstrated the power of known natural causes in explaining the earth's history.

Francis Crick was an English molecular biologist, biophysicist, and neuroscientist.

"On the Origin of Species" is a book written by Charles Darwin and published in 1859.

Thomas Henry Huxley was a prominent British biologist and advocate for scientific education in the 19th century.