The United States
Ford Model T started production in October 1908, very slick but solid and durable. In 1913 Henry Ford introduced the assembly line to the automotive industry. The model T then became the first car which was made by the assembly line, whose selling price was ever lower than 300 dollars. The appearance of Model T enabled ordinary families to buy cars and promote America to become a country on the wheel. Within 19 years the sales volume of Ford Thad had reached more than 15 million in total.