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.
Additionally, a huge failure of the Versailles treaty is due to it brought the rising of Adolf Hitler. The treaty placed a number of restrictions on Germany and put them in financial ruin and later on lead to depression and inflation.urthermore, the cause of failure of the treaty was because it was lack of the enforcement mechanism and lack of willingness of the allied powers.