Exhibit A displays early inventions related to the industrial progress and economic prosperity of the19th and 20th centuries. Exhibit B displays other areas of innovation and exploration. Exhibit C displays major scientific discoveries and contributions. Exhibit AA shows military participation from the pre- Revolutionary war period to Vietnam. Exhibit BB displays social progress contributions of African Americans from the enslavement era to the Civil Rights movement. Exhibit CC showcases contributions of non-black partners in social progress struggles.
Added by Upcoming Robot on September 1, 2011