Here are some notable events that occurred on September 18 throughout history:
1. 324 AD: The Battle of Chrysopolis took place, leading to the end of the Roman Civil Wars and the establishment of Constantine the Great as the sole ruler of the Roman Empire.
2. 1793: President George Washington laid the cornerstone of the U.S. Capitol building in Washington, D.C.
3. 1851: The first issue of "The New York Times" was published.
4. 1947: The United States Air Force was established as an independent service branch.
5. 1970: The first Earth Day was celebrated, emphasizing environmental awareness and action.
These events highlight significant moments in politics, media, and environmentalism across various eras.
