The two causes of World War 2 were:
(i) Conflict of ideology between Dictatorship and Democracy
(ii) Inefficiency of league of Nations.
The stock market crash of 1929
Many knights were professional warriors who served in the lord's army. ... In return, the lord provided the knight with lodging, food, armor, weapons, horses and money. Peasants, or serfs, farmed the land and provided the vassal or lord with wealth in the form of food and products.
