To end World War I, a treaty was signed which came to be known as the Treaty of Versailles in 1919. Under this treaty, Germans forced to accept the responsibilities of the war, which forced Germans to pay off large reparations to the Allies (Britain, France, United States). The treaty restricted the military with minimum arms and ammunition with no airships. The treaty also required to surrender the territory which had been part of Germany.
The 3 nations signed the NAFTA to lift all trade embargoes between the 3 countries. This meant free trade, without them being taxed for bringing their goods into the country