On 1 January, 2020 Akershus, Buskerud and Østfold counties merged along with three other municipalities to form Viken county.
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Juan Manuel de Rosas' rose to power on 6 December, 1829 to become Governor of Buenos Aires Province - effectively President - of the United Provinces of the Río de la Plata. Some time after his appointment, the flag was changed to the dark blue due to the association of the traditional light blue being associated with the Unitarians, the rival political group at the time.
On 4 January, 1831, the Federal Pact gave birth to the Argentine Confederation.
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After stepping down from his leadership on 05 December, 1832, Juan Manuel de Rosas returned to power as the Governor of Buenos Aires Province with the 'sum of public power'. This act gave Rosas the power of all three branches of government making him Dictator of the Argentine Confederation. Following his Sometime after taking his role, the flag of the Confederation was altered to include the Phrygian caps . Jaume Olle places the adoption of this flag on or before 13 April, 1836. [Other]
On 1 January, 2020 Aust-Agder and Vest-Agder counties merged to form Agder county.