<span>Emergence of a militant pan-Indian movement two decades later</span>
In the classic sense, American imperialism is a myth. The US never had a policy either stated or understood of importing cheap raw material and requiring vassal states or colonies to accept expensive manufactured goods, as did for England. The dominance of American culture and products in the mid 20th century was mostly the result of people in other nation craving the standard of living enjoyed in the world's largest democracy.
The answer is because in urban areas there are more industrial jobs
Canals are man-made, meaning, they are Human Systems.
Faults are natural, meaning, they are <span>Physical Systems.
Floods are not created by man, meaning, they are </span>Physical Systems.
Bridges are man-made, meaning, they are Human Systems.
I hope this helps!