What happened 1851 AD

At age 18, he went to the United States for one year to study, working for a short period under Swedish-American inventor John Ericsson, who designed the American Civil War ironclad USS Monitor.

In 1851, Jean Eugène Robert-Houdin publicly demonstrated incandescent light bulbs on his estate in Blois, France. His light bulbs are on display in the museum of the Château de Blois.

In 1851, Seh-Dong-Hong-Beh led an all-female army consisting of 6,000 warriors against the Egba fortress of Abeokuta, to obtain slaves from the Egba people for the Dahomey slave trade.

In 1851, Truth joined George Thompson, an abolitionist and speaker, on a lecture tour through central and western New York State. In May, she attended the Ohio Women's Rights Convention in Akron, Ohio, where she delivered her famous extemporaneous speech on women's rights, later known as "Ain't I a Woman?".

Meanwhile, in 1851, Douglass merged the North Star with Gerrit Smith's Liberty Party Paper to form Frederick Douglass' Paper, which was published until 1860.

The flag was changed to have 31 stars. (for California)

Feeling that the prejudice against women in medicine was not as strong there, Blackwell returned to New York City in 1851 with the hope of establishing her own practice.

After attending the Altes Gymnasium in Oldenburg, Lothar studied medicine at the University of Zurich in 1851.

The Sicily tornadoes were two tornadoes that swept the Marsala countryside in western Sicily, Kingdom of the Two Sicilies (now Italy) in early December (possibly late November) 1851. The total number of victims is unknown, but is assessed at over 500. It is one of the 10 deadliest tornadoes ever, achieving the highest death toll for a tornado event in continental Europe and the second in European history after the Valletta, Malta Tornado.

On December 24, 1851, the largest fire in the library's history destroyed 35,000 books, about two–thirds of the library's collection and two-thirds of Jefferson's original transfer.