It appears that Montevideo will finally fall,…
1840 CE to 1851 CE
It appears that Montevideo will finally fall, but an uprising against Rosas led by Justo José de Urquiza, governor of Argentina's Entre Rios Province, with the assistance of a small Uruguayan force, changes the situation.
They defeat Oribe in 1851, thereby ending the armed conflict in Uruguayan territory and leaving the Colorados in full control of the country.
Brazil now intervenes in Uruguay in May 1851 on behalf of the besieged Colorados, supporting them with money and naval forces.
With Rosas's fall from power in Argentina in February 1852, the siege of Montevideo will be lifted by Urquiza's pro-Colorado forces.