The 18th century CE is defined by the calendar of Earth as occurring from the year 1700 through the year 1799.
Events
American Indian settlement
- A group of anthropologists called the Preservers visit Earth. They transplant a group of American Indians, including people from the Delaware, Navajo, and Mohican tribes, to a class M planet where they are able to live undisturbed. (TOS: "The Paradise Syndrome")
- The T'Lani and Kellerun declare war on each other. (DS9: "Armageddon Game")
- The people of Beta Portolan are overcome by a mass insanity, brought by the arrival of the Denevan neural parasites. (TOS: "Operation -- Annihilate!")
- The planets Eminiar VII and Vendikar begin a bitter war. The conflict is fought entirely in a computer simulation, and casualties are calculated based on projected results. (TOS: "A Taste of Armageddon")
- Colonists from Peliar Zel first migrate to the planet's two moons. (TNG: "The Host")
- Hundreds of criminals from the planet Ux-Mal are imprisoned on a moon of Mab-Bu VI, after their consciousnesses are permanently separated from their bodies. (TNG: "Power Play")
- Chez Sandríne is opened in the city of Marseille on Earth. (VOY: "The Cloud", "Non Sequitur")
- 1776 CE
- The United States of America declares independence from Great Britain following the American Revolution. (TNG: "The High Ground")
- The Presidio, a future site of Starfleet Command and Starfleet Academy, is founded by Spain.
- 1786 CE
- Davy Crockett is born. (DS9: "Once More Unto the Breach")
| 17th century | Timeline | 19th century |