When was African American inventor Louis Alexander born?

Where is the decree abolishing the feudal system kept now? Who made the first mass-produced computer that used vacuum tubes? What were the surroundings of the yakima Indians? Which states have less people than Louisiana? How many episodes in the vikings? What is the origin ethnicity andor country of origin of the surname Provencher? When a white moth lands on a white birch tree if the birch is covered with black soot what would happen to the moth? What was Benjamin a president of? What was the achievement of public school desegregation primarily attained through? What factors would lead prisoners to attribute guard brutality to the guards' disposition or character rather than to the situation? Which two states grew in size after the Gadsden purchase? Samuel marsden based himself mainly in? Do all affairs end badly? What does broad mean in the lyrics of the star spangled banner? What conference was held to establish a long term peace plan for Europe following the Napoleonic Wars? What are common jobs in Peru? Who are the famous Indian leaders of the timucua tribe? What is a country or territory governed internally by a foreign power called? Who was the colonel of Virginia milita who attacked french soldiers near Fort Duquesne beginning the French and Indian War? How did the Sumerians lay the foundations of a flourishing civilization in Mesopotamia?