The reason you look for scholarly articles is to find out what other scholars have said about your topic. Because this is a history class, you want to find articles with a historical perspective. Your best bet is to use the database Historical Abstracts to find articles published in history journals. However, depending on your topic, you might also want to use other multidisciplinary databases that include articles from journals in other disciplines (humanities in general, political science, sociology, etc.).
Start with the databases below: