Final answer:
Karl Marx wrote 'The Communist Manifesto' with Friedrich Engels, publishing the influential political text in 1848 that explores Marxist theory and critiques of capitalism.
Step-by-step explanation:
Karl Marx's co-author for The Communist Manifesto was Friedrich Engels. Marx, a German philosopher and economist, teamed up with Engels to publish this pivotal political text in February 1848, a document that has since become one of the most influential in the history of political thought. Marx and Engels crafted a manifesto that lays out their critique of capitalism and their vision for a classless society, which contrasts with other sociopolitical theories, including those proposed by Comte.
It's noteworthy that The Communist Manifesto was published against the backdrop of widespread revolutionary activity across Europe, which sought to upend the existing social and political order. Although these revolutions did not create the predicted 'dictatorship of the proletariat,' they set the stage for an ongoing discourse on socialist and communist ideology, influencing subsequent revolutions such as the one that occurred in Russia in 1917. Despite the many interpretations and misinterpretations of this work, Marx's and Engels's original text remains a critical source for understanding Marxist philosophy and socialist political theory.