Exogenous Growth Theory is an economic model that explains long-term economic growth as a result of external factors, rather than internal dynamics of the economy. It emphasizes the role of technological advancements and innovations, which are considered to come from outside the economic system. This theory suggests that improvements in productivity and efficiency drive growth, leading to higher standards of living. A key figure associated with this theory is Robert Solow, who developed the Solow Growth Model. This model highlights how factors like capital accumulation and labor force growth contribute to economic expansion, but ultimately attributes sustained growth to technological progress that is not influenced by the economy itself.