This may be a little different from the Schoolhouse Rock history vignettes you remember. Substantially accurate, although the folks at YouTube warn that Alexander the Great was “Greek, not Roman.”
[kml_flashembed movie="http://www.youtube.com/v/UQBWGo7pef8" width="400" height="326" wmode="transparent" /]
Actually, Alexander the Great was from Macedon, but close enough.