Overview. There are significant differences between economic growth and economic development. The term economic growth refers to the increase (or growth) of a specific measure such as real national income, gross domestic product, or per capita income.DP is a specific measure of economic welfare that does not take into account important aspects such as leisure time, environmental quality, freedom, or social justice. Economic growth of any specific measure is not a sufficient definition of economic development.
Top 10 facts about the world. Alexander Miles is an African-American inventor who is largely known for his contribution to the elevator industry. He was awarded a US patent in 1887 for his design, although he was not the person who originally invented the concept of the elevator or elevator doors.
Alexander Miles. Alexander Miles was an African-American inventor who was best known for being awarded a patent for an automatically opening and closing elevator door design in 1887. Contrary to many sources, Miles was not the original inventor of this device. In 1874, 13 years before Miles' patent was awarded, John W. Meaker was awarded U.S. Patent 147,853 for the invention of the first automatic elevator door system.