All of the following developments in Germany during the 1930s (the construction of fortifications along the Rhine River, the annexation of Austria, and the resumption of the military draft to create a large army) were violations of the Treaty of Versailles, except D) the return of the Saarland to German control.
The United Nations is an international organization that was founded in 1945 to take actions on the issues confronting the humanity, such as: peace and security, climate change, sustainable development, human rights, terrorism, humanitarian and health emergencies, gender equality, and many others.
It has six main bodies: the General Assembly; the Security Council; the Economic and Social Council; the Trusteeship Council; the International Court of Justice and the Secretariat.