Misc: Which London Underground station had its name changed to Barbican in 1968?

Questions

In 1989 ---------- Wall opens in East Germany. ?

In 1989 Guerrillas battle with government forces in El---------- . ?

In 1989 Germans begin punching holes in the ---------- Wall. ?

In 1620 41 Pilgrims signed a compact aboard---------- . ?

In 1648 Dutch and ---------- agree to divide St. Maarten, Leeward Islands. ?