φ 19th-21st

φ0 - 19th ..
φ1 1900-14 Pre-WW1 ..

φ2 1914-18 WW1 ..
φ3 1918-39 Interbellum ..
φ4 1939-45 WW2 ..
φ5 1945-91 Cold War ..
φ6 1991-99 Post-Soviet ..
φ7 2000-09 ..
φ8 2010-19 ..
φ9 2020+ ..

φ0 - 19th

φ1 1900-14 Pre-WW1

φ2 1914-18 WW1

φ3 1918-39 Interbellum

φ4 1939-45 WW2

φ5 1945-91 Cold War

History of the Cold War: Every Month - Dec '45 to Dec '91 > . 
Entire History of the Cold War Explained | Life Guide > .
Berlin Wall: Escaping for Freedom and Love - Geographics > .

Cold War: Seven Minutes to Midnight | Wars of World > .

Stasi and the Berlin Wall | DW Doc > .

Reunification: Re-Absorbing East Germany After Fall of Berlin Wall - Megaprojects > .

German reunification – a short history | DW Doc > .

φ6 1991-99 Post-Soviet

φ7 2000-09

φ8 2010-19

φ9 2020+

●● Future? ..