Statistics for World Border Changes: 1900s

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Year	Formerly	Became	% Correct
1900	Samoa	United States	94%
1903	Cuba	United States	94%
1903	Panama	United States	94%
1900	Niue	United Kingdom	87%
1903	Adamawa	United Kingdom	87%
1909	Siam	United Kingdom	87%
1902	Zaria	United Kingdom	87%
1901	Ashanti Empire	United Kingdom	87%
1902	Abuja	United Kingdom	87%
1907	Siam	France	77%
1904	Champasak	France	77%
1904	Siam	France	77%
1905	Norway-Sweden	Sweden	68%
1905	Norway-Sweden	Norway	66%
1908	Congo Free State	Belgium	64%
1903	Bolivia / Acre	Brazil	64%
1907	Colombia	Brazil	64%
1903	Adamawa	Germany	64%
1902	Mandara	Germany	64%
1905	Russia	Japan	62%
1903	Colombia	Panama	60%
1903	Aceh	Netherlands	51%
1907	United Kingdom	New Zealand	49%
1901	United Kingdom	Australia	43%
1903	Brazil	Bolivia	43%
1902	United States	Cuba	40%
1908	Ottoman Empire	Bulgaria	38%
1904	France	Siam	13%
1907	France	Siam	13%