Cyfnod
1457-1526
2
1535-1617
2
16th cent
2
1945-1989
2
20th century
2
To 1811
2
1475-1519
1
16th century
1
1743-1826
1
1773-1859
1
1783-1865
1
1789-1900
1
1838-1918
1
1839-1909
1
1861-1865
1
1882-1945
1
1933-1945
1
1939-1975
1
1989-
1
Civil War, 1861-1865
1
Conquest, 1519-1540
1
Conquest, 1522-1548
1
Spanish-American War, 1898
1
To 1565
1
To 1600
1
approximately 1500-1542
1