The 19th century

8,823 sourced entries across 100 documented years, grouped into 10 decades. A century here runs 1900–1999 rather than 1901–2000, so its decades sit inside it exactly.

Decades

The 1800s — 10 years, 710 entries
The 1810s — 10 years, 747 entries
The 1820s — 10 years, 720 entries
The 1830s — 10 years, 755 entries
The 1840s — 10 years, 832 entries
The 1850s — 10 years, 891 entries
The 1860s — 10 years, 1,025 entries
The 1870s — 10 years, 979 entries
The 1880s — 10 years, 996 entries
The 1890s — 10 years, 1,168 entries

By subject

Conflict & Security in the 19th century — 1,262 entries
Geopolitics & Diplomacy in the 19th century — 1,124 entries
Culture & Society in the 19th century — 1,105 entries
Technology & Infrastructure in the 19th century — 649 entries
Exploration & Expansion in the 19th century — 347 entries
Science & Discovery in the 19th century — 270 entries
Disasters & Accidents in the 19th century — 248 entries
Religion & Belief in the 19th century — 241 entries
Crime & Justice in the 19th century — 224 entries
Economy & Finance in the 19th century — 223 entries
Climate & Environment in the 19th century — 176 entries
Health & Medicine in the 19th century — 154 entries

A few of the years

1800May 15 – Napoleon and his French army (40,000 men)—not including the field artillery and baggage trains—(35,000 light artillery and infantry, 5,000 cavalry) begin crossing the Alps. He selects the shortest route through the Great St Bernard Pass, and invades after five days traversing the northern region of Italy.
1811June 19 – The Carlton House Fête is held at the Prince Regent's London residence Carlton House to celebrate the establishment of the Regency era.
1822January 7 – The first freed slaves from the United States arrive on the west coast of Africa, founding Monrovia on April 25.
1835May 11 – Matua, High Priest (taura tupua) of the Polynesian island of Mangareva, is baptized into the Roman Catholic Church.
1847March 14 – Verdi's opera Macbeth premieres at the Teatro della Pergola, in Florence, Italy.
1859March 3 – Construction begins on the first railway in northern India as tracks are laid between the modern-day locations of Allahabad and Kanpur.
1872February 17 – Filipino priests José Burgos, Mariano Gomez and Jacinto Zamora, collectively known as Gomburza, are executed in Bagumbayan Fields, Manila, Philippines by the authorities of New Spain, on charges of subversion arising from the 1872 Cavite mutiny.
1883February – The Adventures of Pinocchio by Carlo Collodi is first published complete in book form, in Italy.