How did roeblling, sullivan, otis, and olmstead contribute to modern society?
a.
through new business models that are still used today
b.
through innovations that made modern cities possible
c.
by changing the way people thought about government and politics
d.
by proving that immigrants could succeed in the united states

Which answer best describes an advantage of shipping goods by canal? a) most towns would rather have canals then noisy railroads b) goods could travel very fast downstream in the canal system c) traveling by boat is a much more relaxing way to transport goods. d) heavy loads of goods could travel by boat more easily then if pulled by horses.