The Communist Manifesto was published in 1848.

Yes, they are one and the same work. "The Manifesto of the Communist Party" is the same work as "The Communist Manifesto." It simply is the full title of the work translated from the original German "Manifest der Communistischen Partei."

The opposite of the Communist Manifesto would likely be a text or ideology promoting capitalism or individual ownership of the means of production. Capitalist Manifesto could be considered as providing a contrasting perspective to the Communist Manifesto.

The Communist Manifesto was a book written by Karl Marx and Friedrich Engels in 1848.

Karl Marx wrote "The Communist Manifesto" and "Das Kapital," which are two of his most famous works that laid the foundation for the socialist movement and critiques on capitalism.