Entrepreneurship involves creating new businesses and driving innovation and economic growth. In the 19th-20th centuries, entrepreneurs were often seen as managers from an economic perspective. By the mid-20th century, the view of entrepreneurs as innovators who revolutionize production emerged. Examples of famous entrepreneurs include Walt Disney, who innovated in entertainment, and Olympic sprinter Oscar Pistorius, who pioneered prosthetic limbs. Entrepreneurship is important because it leads to innovation, job creation, wealth generation, and economic growth for nations.