Historical
Innovators/Public Figures
100

Who made Juneteenth a Federal Holiday?

Former President Joe Biden
100
Who invented the first refrigerated truck for food distribution? 

Fredrick McKinley Jones

200
In what State was the General Order No.3 announced in? 

Texas

200
Who invented peanut butter?

George Washington Carver

300
What President signed the Emancipation Proclamation?

Abraham Lincoln

300

Who created the traffic light?

Garrett Morgan

400

Who was the 44th United States President?

Barrack Obama

400

Who pilot the underground railroad?

Harriet Tubman

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