credits:

Berlin Wall - History, Dates & The Fall

Berlin Wall | Definition, Length & Facts | Britannica

the entire history of the Cold War explained | best Cold War documentary

the Berlin Wall (1961 - 1989)

the rise and fall of the Berlin Wall - Conrad H. Jarausch

history brief: the Berlin Wall explained

the Berlin Wall - how it worked | DW documentary

why the wall Rose--and how it fell - National Geographic

World War 1: summary, causes & facts - HISTORY,

10 little known facts about WW1 | sky history TV channel

Berlin Wall quotes - BrainyQuote

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