The main way in which the skyscraper came to symbolize the goals of America in the 1920’s is that it stood for "limitless potential" in terms of economic growth, since there is a limited amount of land but "limitless" amounts of sky.
C. Early humans were forced to move to new environments
Among the other achievements of Reconstruction were the South's first state-funded public school systems, more equitable taxation legislation, laws against racial discrimination in public transport and accommodations and ambitious economic development programs (including aid to railroads and other enterprises).