13th January » The Great fire of New Orleans called New Orleans, Louisiana begins.
3rd February » The sovereignty of Greece is confirmed in a London Protocol (1830) named London Protocol.
10th March » The Royal Netherlands East Indies Army is created.
26th March » The Book of Mormon is published in Palmyra (town), New York e.g Palmyra, New York.
6th April » Church of Christ (Latter Day Saints) Church of Christ, the original church of the Latter Day Saint movement, is organized by Joseph Smith, Jr. and others at Fayette, New York Fayette or Manchester (town), New York Manchester, New York.
13th May » Ecuador gains its independence from Gran Colombia.
24th May » 'Mary Had a Little Lamb' by Sarah Josepha Hale is published.
26th May » The Indian Removal Act is passed by the Congress of the United States known as U.S. Congress; it is signed into law by President of the United States called President Andrew Jackson two days later.
28th May » President of the United States known as U.S. President Andrew Jackson signs the Indian Removal Act which relocates Native Americans in the United States named Native Americans.
14th June » Beginning of the French Algeria e.g French colonization of Algeria: 34,000 French soldiers begin their Invasion of Algiers in 1830 e.g invasion of Algiers, landing 27 kilometers west at Sidi Fredj.
11th September » Anti-Masonic Party convention; one of the first American political party conventions.
15th September » The Opening of the Liverpool and Manchester Railway known as Liverpool to Manchester railway line opens.
24th September » Belgian Revolution: A revolutionary committee of notables forms the Provisional Government of Belgium.
4th October » Creation of the Kingdom of Belgium after separation from the Netherlands.
27th November » St. Catherine Laboure experiences a vision of the Blessed Virgin standing on a globe, crushing a serpent with her feet, and emanating rays of light from her hands.