Why were natural mean of carrying commerce (lakes and rivers) unsatisfactory to most americans?

The sixth amendment of the u. s. constitution guarantees the right to which of the following?

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.

Ahistorian who compares the expansion of political systems to the expansion of economic systems is organizing history by