While members of an age set live with their immediate families and local kin groups, and age sets are not tightly organised internally, they serve to apportion roles and status in wider social situations, with senior age sets having a judicial function, for example.
Because they lost the war to the Colonists.
I believe that the answer to the question provided above is because of industrial revolution US shipping industry flourish in the late 1700's
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In 1883, the major railroad companies divided the nation into the for time zones still used today.
