These are a few examples of resources.
Students: you may want to look at the Lesson Plans and Teaching Resources page of this guide. Often lesson plans link to primary resources - they may also pose interesting questions to help you focus your project.
You might also look at our guide for the current year's annual theme. You can reach it from the main History Day research guide - there are links under the page "Annual Themes".
It can help to organize topics by time period - but historical eras do not always have clear start and end dates. Not all topics fit neatly within named time period.
The time periods here are meant to be broad generalizations to aid in organization of resources in our History Day guides. Terms used here have been gleaned from a number of sites that focus on History Day support and resources.
How we name centuries can trip people up. The century is named for a 100-year period that just completed - starting with 1. The 19th Century refers to 1801-1900, as it is the 19th complete century in the Common Era. Think of it as the century covered the past 100 years. Here are some resources: