Anglo-Saxon period, 449-1066 (21)
Allied occupation, 1945-1952 (18)
Augustus, 30 B.C.-14 A.D (16)
Athenian supremacy, 479-431 B.C (7)
Allied intervention, 1918-1920 (4)
Alexander II, 1855-1881 (3)
Angevin period, 1154-1216 (3)
Alfonso X, 1252-1284 (2)
Allied occupation, 1943-1947 (2)
Allied occupation, 1945-1955 (2)
American intervention, 1994-1995 (2)
American occupation, 1915-1934 (2)
Anjou dynasty, 1268-1442 (2)
Anne, 1702-1714 (2)
Antonines, 96-192 (2)
Aragonese and Spanish rule, 1297-1708 (2)
Autonomy and independence movements (2)
Axis occupation, 1941-1945 (2)
Abdul Mejid, 1839-1861 (1)
Afonso VI, 1656-1683 (1)
Africa (1)
Age of Tyrants, 560-510 B.C (1)
Age of Tyrants, 7th-6th centuries (1)
Alekseci Mikhacilovich, 1645-1676 (1)
Alexander II, 1214-1249 (1)
Alfonso V, 1416-1458 (1)
Alfred, 871-899 (1)
Allied occupation, 1945-1948 (1)
American Invasion, 1983. (1)
American Invasion, 1989 (1)
American Invasion, 1989. (1)
Angola (1)
Anthropocene (1)
Arab Revolt, 1916-1918 (1)
Arab rebellion, 1936-1939 (1)
Arab riots, 1929. (1)
Archaean (1)
Athelstan, 925-940 (1)
Attempted Mongol Invasions, 1274-1281 (1)
Attempted coup, 1991 (1)
Aurelian, 270-275 (1)
Axis occupation, 1939-1944 (1)