Manifest Destiny is the belief that god wants us to expand, this is during the Oklahoma land rush so I would start there.
You need to use your textbook
The correct answer is letter C.
There is a famous slogan taken out of The Communist Manifesto which is <em>"Workers of the world, unite!".</em> The Communist Manifesto of Marx and Engels often emphasized that the proletariat should be united in a worldwide revolution against the bourgeoisie and the capitalist system.