What event contributed to the growth of communism and a worldwide depression after 1918 french revolution world war 1 world war 2 cold war

answer; collective security;

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

where is the passage