Answer:
C. Doctors have been unable to develop a vaccine.
Explanation:
Answer: 1975
Explanation:
That was when they got fully communized.
It's C
The north had the money, the people, and the industrial power to branch out the railroad networks. So following markets and money. The north built networks to the west.
The south in contrast was did not have the capacity to construct as much railroads as the north did so therefore there was less western expansion. As well the south had more interests building canals and shipping product of the states to England.
These usually result from wind and can travel hundreds of miles before they reach the shore.
Tides
This is a continuous directed movement of ocean water
Ocean Wave
The answer to this question would be yes.
