Gas prices doubled during this time, it is the correct answer!
The correct answer is the arrival of railroads
Explanation: A railroad is a transportation system based on trains running on previously arranged tracks. Rail transport is prevalent in highly industrialized regions such as Europe, the far east of Asia and even in highly populated places like India. And it helped the most in the time of revolution, because of the great distances.
The gulf coast of the United states
Where did the plague of the fourteenth century originate? A. Africa B. South America C. the United States D. Asia
the answer is
Asia