What is propaganda? is propaganda successful? why or why not?

What principle did president truman invoke in sending u.s. troops into south korea without first asking congress to declare war?

Which of the following statements would be supported by both a communist and a utopian socialist? a) a government should restrict the number of imports and exports to protect its gold reserves b) governments have no right to restrict the actions of businesses or customers c) society will shift towards socialist ideals without the need for violent revolutions d) the gains of the industrial revolution should be shared by all members of society

The answer because i don’t know it someone