Top 30 Countries by Oldest Adoption of Current Flag Design

Name the 30 current flags that've represented a country the longest time.
Minor design changes of a flag doesn't make it a different one. Therefore a slightly modified flag isn't considered as a new one.
Quiz by Maxnorrac
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Last updated: February 26, 2016
First submittedFebruary 25, 2016
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Year
Continent
Country
1
1370
Europe
Denmark
2
1572
Europe
Netherlands
3
1801
Europe
United Kingdom
4
1817
South America
Chile
5
1818
South America
Argentina
6
1821
Europe
Norway
7
1825
South America
Peru
8
1828
South America
Uruguay
9
1830
Europe
France
10
1831
Europe
Belgium
11
1831
Africa
Tunisia
12
1842
South America
Paraguay
13
1844
Asia
Turkey
14
1847
Africa
Liberia
15
1851
South America
Bolivia
16
1860
South America
Ecuador
17
1861
South America
Colombia
18
1862
Europe
San Marino
19
1866
North America
Honduras
20
1870
Asia
Japan
21
1871
North America
Guatemala
22
1875
Oceania
Tonga
23
1881
Europe
Monaco
24
1883
Asia
South Korea
25
1889
Europe
Switzerland
26
1898
Asia
Philippines
27
1901
Oceania
Australia
28
1902
Oceania
New Zealand
29
1902
North America
Cuba
30
1925
Europe
Sweden
+1
Level 79
Feb 25, 2016
Did south Korea exist before the Korean war?
+1
Level 43
Feb 26, 2016
Korean Empire, the former South Korea, did exist. And even if the Korean war divided the peninsula into tow nation-states, South Korea considers itself as the main continuity of the precedent Korean nation, officially calling itself "Republic of Korea'' and using the same flag design as the Empire's (though North Korea pretends to be the only legitimate Korea as well). Forgetting some details, the same goes with South Sudan separating from Sudan : Sudan doesn't become another country because of that, even if the territorial and political changes aren't negligible. But correct me if I'm wrong somewhere.
+1
Level 45
Feb 23, 2021
Portugal's actual flag represents the country since 1911, meaning it should be the number 30 (unless there are other country flags that I don't know that are also not considered here).