1943 ⟶ The Pentagon Completed

January 15: The Pentagon is completed.
Timelines Logo
Year
1890
1936
1942
1943
1947
1952

💥 Wounded Knee Massacre

The Wounded Knee Massacre in South Dakota was the last battle in the American Indian Wars. This event represents the end of the American Old West.⟶
Wounded Knee Massacre (1890)
Native American HistoryUnited States HistoryGenocideLakotaAmerican WestColonialismMilitary ConflictIndigenous Rights
United StatesUnited States

🏞️ Hoover Dam Completed

The Hoover Dam is completed.⟶
Hoover Dam Completed (1936)
InfrastructureGreat DepressionConstruction
United StatesUnited States

☢️ The Manhattan Project Launched

The Manhattan Project begins.⟶
The Manhattan Project Launched (1942)
World War IINuclear WeaponsAtomic BombMilitary TechnologyScientific ResearchAllied Powers
United StatesUnited States

🏢 The Pentagon Completed

January 15: The Pentagon is completed.⟶
The Pentagon Completed (1943)
World War IIUS MilitaryDefenseInfrastructureCold War
United StatesUnited States

🚀 Chuck Yeager Breaks the Sound Barrier

Breaking of the sound barrier by Chuck Yeager in Bell X-1.⟶
Chuck Yeager Breaks the Sound Barrier (1947)
AviationAerospaceWorld War IICold War
United StatesUnited States

💥 First Thermonuclear Weapon Detonation

The first thermonuclear weapon is developed.⟶
First Thermonuclear Weapon Detonation (1952)
Cold WarNuclear Arms RaceWeapons of Mass DestructionNuclear WeaponsAtomic AgeMilitary TechnologyNational Security
United StatesUnited States