Answer:
The correct answer is 4. The conditions of the Treaty of Versailles were not monitored completely, ultimately leading to World War II.
Step-by-step explanation:
The Versailles Peace was the peace treaty concluded after the First World War between the Western powers and Germany, signed on June 28, 1919 in Versailles. The war had ceased on November 11, 1918, and for six months after that, negotiations took place between the victorious powers; then Germany was invited and was forced to sign the completed peace agreement without further negotiations.
Among other things, the peace agreement required Germany to pay very large damages repairments in money and equipment to the victorious powers. Germany's armed forces were greatly reduced and the country had to resign from large and important territories. In addition, Germany was forced to take on the entire debt for the war.
The conditions of the Versailles peace and the way in which the peace treaty came about have been seen by some historians as a cause of German revenge schism in the 1920s and 1930s and the national socialist takeover, events which in turn led to the Second World War.