Which statement offers the clearest example of how improvements in communication technology helped unify the country?

A. Improvements in printing resulted in national, not just local,
newspapers.

B. The invention of the typewriter meant that citizens nationwide
used the same machines.

C. The invention of the telephone enabled instant communication
across the continent.

D. Mail delivery service in rural areas connected farmers with
families in their nearest city.

the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.

a plantation economy is an economy based on agricultural mass production, usually of a few commodity crops grown on large farms called plantations. plantation economies rely on the export of cash crops as a source of income.

i hope this : )