Who designed an elevator that made it possible for people to move easily from floor to floor in a skyscraper?
a. louis sullivan
b. frederick olmsted
c. john roebling
d. elisha otis

Which factor best suggests a cause for the urban problems shown in this table? (3 points) increasing discriminatory housing practices shifting population density gradients over time declining urban renewal efforts by city governments declining basic employment sector in industrial cities increasing gentrification efforts in the inner cities

Did the both the us and ussr have atomic weapons after 1949

Plz quickly ! which of the following elements is not typical of an advanced society. a. cities b. science c. industries d. a nomadic lifestyle