Lack of sleep can cause some of the same symptoms as depression -- extreme tiredness, loss of energy, and difficulty concentrating or making decisions. In addition, untreated depression may result in weight gain or loss, feelings of hopelessness and helplessness, and irritability.
Conflicts of national interest caused the World War II alliance between the United States and the Soviet Union to be replaced by a Cold War that lasted 45 years. Initially a dispute over the future of Europe, it grew to include confrontations around the world.
Best Answer: The main reason why the Holocaust took place was due to WW1, now before you through stones read my theory: WW1 caused Germany to become under a state of economic depression due to the Treaty Of Versailles.