By 1930, north dakota had how many miles of roads in its highway system

The state highway system is about half completed. Total earth-graded mileage is 4,300 miles of which 2,800 were surfaced. The only rural pavement in the state is a seven-mile stretch between Bismarck and Mandan.

d. migration

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.