9 page history paper gilded age and progressive era

The assignment is in the attached file. Please follow the instructions very carefully. You must reference three different places and three different decades where you would have went back to make a fortune in America between the years 1870 and 1920. Things like Standard Oil, the invention of the car and Alexander Graham Bell’s phone come to mind, but you can pick whichever decades you want. Please be creative and make sure to cite your sources.