Modern World History: Pages 86-87

The Treaty can be divided into five areas:

War guilt: This part of the Treaty said that Germany had to accept the blame for starting the war. Lots of Germans did not like this. They thought it was unfair.
Reparations: The 'Big Three' powers agreed that Germany must pay reparations (money) to them for all the damage to land, houses, factories, etc. that had happened in the war. They did not talk to Germany about this. They couldn't decide on exactly how much Germany should pay. Finally, in 1921, they said that Germany must pay 6,600 million pounds! In 1929, this was changed to a smaller figure but it was still a lot of money.
German territories and colonies: The Treaty said that Germany must lose all its colonies. These colonies were then controlled by the League of Nations. This really meant that France and Britain controlled them. A lot of German borders in Europe changed - this was a very complicated part of the Treaty. The Treaty also said that Germany was not allowed to join together with its ally, Austria.
Germany's armed forces: This part of the Treaty said that Germany could only have a very small army and very few weapons. All the 'Big Three' (especially France) were worried about the size of the German army. So the Treaty said:

the German army could only have 100,000 soldiers in it
conscription was banned; soldiers had to be volunteers
Germany was not allowed to have tanks, submarines or fighter planes
the German navy could only have six battleships
Germany was not allowed to have soldiers in the Rhineland - this was the area between France and Germany.

The League of Nations: This was an international organisation. Lots of countries were in this organisation. They agreed to try and keep the world peaceful. It was a kind of' international police force'. Germany was not invited to join. First, they had to show they were a' peace-loving' country.