The North American War of 1812 between the United States and the United Kingdom of Great Britain and Ireland. The war lasted until the beginning of 1814.
The Luddites (1811 - 1816) in Britain were machine-wreckers, protesting against machines perceived as taking their jobs.
The Year Without a Summer in 1816, a year of severe climate abnormalities caused famines throughout the world as a result of atmospheric dust from volcanic eruptions.
The Congress of Vienna reshapes the map of Europe after the defeat of Napoleon and introduces a policy of reaction and restoration throughout Europe (1814-1815).
Gas lighting becomes a practical technology and is implemented in cities in Europe and the United States.
The Third Anglo Maratha War is fought between the Marathas and the British East India Company troops in the year 1818 resulting in the defeat of the Peshwa and annihilation of the Maratha confederacy and British annexation of Central India. The last Peshwa is exiled to Bithur near Kanpur. His adopted son and heir Nana Saheb was one of the principal revolutionary commanders in the Indian Mutiny.