Databases are searchable collections of reliable, vetted resources, like magazines, academic journals, newspapers, and encyclopedias. We pay for access to these resources through subscriptions--like Netflix, but for articles!
The databases listed below are the best databases for your class.
Reference, journal, and magazine articles regarding significant people, past and present
Digitized back issues of academic journals - ideal for history research
You may need to search for articles within Google Scholar. This video will show you how to access it.