The economy grew more quickly during the gilded age than at any other time in us history. two factors that caused this growth were

The Gilded Age had an advantage of laissez-faire economics meaning no government regulation in the economy. Therefore businesses could consolidate and buy out others without any worry of monopoly and/or trust laws. Additionally due to a boom in immigration this period also offered an unlimited supply of unskilled workers. This was bad for workers and the formation of unions but good for corporations as they were able to pay little and make a lot. 

If your answers look like this a) expansion through conquestb) development of a calendar c) development of a written language d) creation of a large road workthen the answer is dhope it

Ithink it's f if it's not then it is c a