Deutschlandvertrag
The General Maritime Treaty of 1820 was a treaty initially signed between the rulers of Abu Dhabi, Sharjah, Ajman, Umm Al Quwain, Ras Al Khaimah and Great Britain in January 1820, with the nearby island state of Bahrain acceding to the treaty in the following February. Its full title was, "General Treaty for the Cessation of Plunder and Piracy by Land and Sea, Dated February 5, 1820".