At this polling station, U.S. Army soldiers are serving as poll workers, since the state of Virginia is under federal military rule. In 1867, the Radical Republicans, now in control of Congress, passed the Reconstruction Acts, dividing all the seceded states except Tennessee into five military districts and putting federal troops in charge of Southern elections.
- This indicator was developed to encourage inquiry into the significant causes of World War I and the factors leading to U.S. involvement. This indicator was also developed to promote inquiry into the effects of the war, to include its impact on the homefront, migration patterns, and continued foreign policy debates.
- This indicator was developed to encourage inquiry into the causes of American expansion, such as a growing and diversifying population and the expansion of the plantation economy. This indicator promotes inquiry into the relationship between sectionalism and political compromise, culminating in the Civil War.