I need an explanation for this Political Science question to help me study.

Question: Marx and Engels’ The Communist Manifesto is often regarded as one of the first true works of ‘world’ literature. In part, this is a result of their attention to the limits of nationalism and the importance of class as a concept found across cultures. How do Marx and Engels appeal to an audience that is ‘beyond’ borders? Why is class conflict a useful lens for them to explain both ‘local’ and ‘global’ economic change?

Papers must be 750 words (about 3 pages) in length, double-spaced, 12-Point, Times New Roman, with 1” margins all around. Do not restate the prompt below on the first page of your paper. Do not write one sentence on page three and consider your work done. You should have a TITLE at the beginning of your essay, with your NAME and PSCI2014 as the only other headings. You Must Have An Argumentative Thesis Statement: Political theory is about demonstrating both historical and textual knowledge. Your paper should address what we know about Marx, his context, his approach, and his objectives, all in the process of defending a specific claim that answers the questions above. State this clearly in your first paragraph. 2. You Must Have Textual Evidence: Any good paper in political theory will contain ample and well-chosen textual evidence. That means you will have numerous, but brief textual citations to demonstrate the strength of your thesis. Apart from lectures, no outside sources should be used. Use parenthetical citations with relevant page numbers from our text (e.g., Marx 177). Make sure to draw as many illustrations from the text as possible and connect them with your larger point. Tell us why these exchanges are important to you. Remember political theory is about showing us how you you arrived at your understanding.