Covalent compounds can be subdivided into polar and no polar compounds. In water, a polar molecule, the hydrogen electrons are not shared equally with the oxygen atoms; this results in a polar bond. Oxygen due to it's greater electro negativity pulls the electrons closer to its nucleus.
The Treaty of Versailles was the main causes of World War II due to the following reasons,Germany had to pay back 33 billion after WWI and forced to accept sole blame for the war in order to justify the reparations.
The Treaty of St. Germain ending the war between the Allies and Austria (a successor state of the Austro-Hungarian Empire was signed September 10, 1919. The Versailles Peace Treaty (1919) is the best known World War I peace treaty. It was the treaty with Germany. Like Germany, Austria (as one of the successor states to the Austro-Hungarian Empire) was punished for causing the War.