Technology
Education
Who Invented School?
Technology
Who Invented the Cell Phone?
Household
Who Invented Fencing?
Household
Who Invented the Smoke Detector?
Health
Who Invented the Hearing Aid?
Technology
Who Invented the Color Television?
Education
Who Invented the Pythagorean Theorem?
Technology
Who Invented the Wheelbarrow?
Food
Who Invented Starbucks?
Sports
Who Invented Golf?
Education