Where does sea-floor spreading take place? a. convergent boundaries c. oceanic volcanoes b. transform boundaries d. mid-ocean ridges

Shaken by the collapse of the steel industry, which had provided them with an unshakable sense of identity for more than a century, pittsburghers hunkered down and built a new economy based on services, medicine, education, and technology. in the process, they transformed their community from one driven by quantity of production into one devoted to quality of life. —peter miller, "pittsburgh: stronger than steel," national geographic, december 1991. the community remodeling carried out in pittsburgh was accomplished partly through the conversion of old factories for new uses—a process known as a. urban renewal. c. gentrification. b. retooling. d. urban pioneering.

Following lenins death, who took control of the soviet union

Which of the timelines above correctly shows the order of historical events on the african continent? a. one (1) b. two (2) c. three (3) d. four (4)