<p>Neither of those exams are particularly hard. If you study for about 3 weeks at 3-5 hours per day you should be able to know the concepts. APUSH is a more straightforward exam which tests you on simply the history concepts but there is a wide range of topics that are fair game. Meanwhile Government has a smaller amount of information but it will often require that you incorporate outside thought or even real-world examples. I would personally take Government because it will probably require less studying and actually helps you in the real world which APUSH is relatively useless (unless you love Jeopardy).</p>