Option 2: (A), (C), (B), (D) -> The chronological order is: (A) Adam Smith's 'Wealth of Nations' was published in 1776, marking the foundation of classical economics. (C) Keynes's 'Economic Consequences of the Peace' was published in 1919, criticizing the Treaty of Versailles. (B) The Great Depression occurred from 1929-1939, the worst economic crisis in modern history. (D) Keynes's 'General Theory' was published in 1936, revolutionizing macroeconomic thought during the Depression era. -> correct