Minh Mạng abolished the old garrisons, regions and the viceroyalties of the North and South and divided the country into 31 provinces; Phan Huy Lê ranks it with Lê Thánh Tông's as the most effective administrative reforms in Vietnamese history.
Political
Minh Mạng's provincial reform
- 1831 – 1832
- Southeast Asia
Meanwhile, elsewhere
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- 1853 – 1856Crimean WarEurope
- 1857 – 1858Indian Mutiny of 1857South Asia
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- 1846 – 1848Mexican-American WarMesoamerica and the Caribbean
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- 7 May 1850Swiss francEurope
- 1815 – 1871Unification of ItalyEurope