US History Capstone Project Topics
US history spans four centuries of contested citizenship, expansion, war, and reform, recorded in court cases, newspapers, letters, photographs, and datasets. As a team at TopicSuggestions, we approach capstones like researchers: start with a focused problem, ground it in primary sources, and choose methods that fit the evidence. Today we will give you clear, workable ideas that fit real timelines and rubrics, so you can move from topic to thesis without getting stuck. In this post, we will share curated capstone topics grouped by time period and theme, flag primary-source starting points for each idea, and suggest angles for different project formats (paper, digital exhibit, oral history, or data analysis). We will close with quick tips on scope, feasibility, and ethical use of sources. Now, here are the topics.