sentences:  Income inequality rose from 1913 to peaks in 1926 (1928 Gini 48.9, 1936 Gini 45.5) and 1941 (Gini 43.1), after which war-time measures of the Roosevelt administration began to equalize the income distribution.Social Security was enacted in 1935.At several points in this pre-World War 2 era, in which the Rockefellers and Carnegies dominated American industry, the richest 1% of Americans earned over 20% of the income share.