The Constitution provided for all of the following EXCEPT * a unitary system of government over all its political subdivisions
three branches of government with separation of powers and checks and balances
a strong national government with expressed powers
a supremacy clause that states all federal laws are supreme over any conflicting
statutes

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.