Categories - Land Acquisition and Expansion, Territory Redistribution
- Fletcher v. Peck
- Abahai
- Abenaki Wars
- Acquisition of the Panama Canal Zone
- Adams-Onís Treaty
- Akbar
- Alani Gain Power
- Alaska and Hawaii Gain Statehood
- Albanian-Turkish Wars
- Alessandro Farnese
- Alexander Nevsky Defends Novgorod from Swedish Invaders
- Alexander the Great Begins Expansion of Macedonia
- Alexander the Great Invades the Indian Subcontinent
- Alexander’s Wars of Conquest
- Algeria Gains Independence
- Algonquians “Sell” Manhattan Island
- All-Pueblo Council
- Alp Arslan
- American Fur Company Is Chartered
- American Indian wars
- American Northwest Indian Wars
- The Anschluss
- Apache Wars
- Armenian Empire Reaches Its Peak Under Tigranes the Great
- Árpád
- Astorian Expeditions
- Athenian Empire Is Created
- Aurangzeb
- Austria Annexes Bosnia and Herzegovina
- Bacon's Rebellion
- Baltimore and Ohio Railroad Begins Operation
- Bannock War
- Bantu Peoples Spread Farming Across Southern Africa
- Basarab Defeats Hungarians
- Basil II Conquers the Bulgars
- Battle of Acoma
- Battle of Ambuila
- Battle of Clontarf
- Battle of Fallen Timbers
- Battle of Fort Mims
- Battle of Gaugamela
- Battle of Granicus
- Battle of Kadesh
- Battle of Ksar el-Kebir
- Battle of Las Navas de Tolosa
- Battle of Laswari
- Battle of Leuthen
- Battle of Luxembourg
- Battle of Megiddo, 1469 b.c.e.
- Battle of Milvian Bridge
