A form of collective social behavior that persists over a long period and gradually finds place as a tradition is called a custom. Examples:
Drinking a glass of wine with each meal--French custom (although that might changing due to economic woe and other variables)
Saying a prayer before each meal--Latin American custom (although it's a custom in other places too, and not every Latin American does this)
She immediately falls in love with hero
The soviets were concerned that the Western Allies wanted to make the western governments into capitalist free trade areas and also that they wanted to reduce the amount of German war reparations. They believed that communism is better than Capitalism and that it should be established in war torn countries.