Template:OpenHistoricalMap/On this day/09/10
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- 221 BCE
- The Qin dynasty (Ch'in dynasty) is established when Ying Zheng declares himself emperor.
- 1721
- After the Great Northern War, the Treaty of Nystadt demarcates the border between Russia and Sweden.
- 1822
- Michigan Territorial Governor William Hull redefines the boundaries of Oakland County and St. Clair County by executive order.
- 1823
- Lock 53 comes into operation on the Erie Canal in New York State.
- 1919
- Under the Treaty of Saint-Germain-en-Laye, Tyrol is divided into the State of Tyrol and Region of Trentino–Alto Adige.
- 1920
- Groß-Berlin is established. With 3.8 million inhabitants, it was the most populous municipality in the world after London and New York and, at 878 km², the most extensive after Los Angeles.
- 2016
- The Wuppertal Clock Museum (Wuppertaler Uhrenmuseum) closes in Wuppertal, North Rhine–Westphalia, after 58 years in operation.
This is a selection of establishments and disestablishments on September 10, based on OpenHistoricalMap data, that automatically appears on the OpenHistoricalMap page on September 10 of each year. This list highlights important changes in the world, as well as more mundane events that demonstrate the project's ambitious tendency toward micromapping history.
Contributing
We appreciate your help in curating these events from OpenHistoricalMap data. Items should be based on fully qualified start_date=* and end_date=* tags, plus any other metadata tagged on features in OpenHistoricalMap. To the extent possible, the list should feature a wide range of years and include events from different continents.