Read the information below about the production of steel. workers employed by andrew carnegie mined iron ore in ohio. the ore was transported across the great lakes and ships owned by carnegie and then transport it to pittsburgh pennsylvania, on carnegie’s railroad. finally, workers in carnegie’s mills turned the iron ore into steel. this information best describes which type of economic and take her geisha this information best describes which type of economic integration.
a) vertical integration
b) the bessemer process
c) assembly line
d) horizontal integration