There were 13 original colonies. The way you know that is by counting the stripes on the American Flag. The original 13 colonies were, New Hampshire, New York, Pennsylvania, Massachusetts, Rhode Island, Connecticut, New Jersey, Delaware, Maryland, Virginia, North Carolina, South Carolina and Georgia.
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<span>The 0-19 demographic is the cohort that is the majority of the population in the US over the years. This seems to be counter-intuitive, since it is usually thought that there are typically more adults than kids, but it shows that adults are more dispersed in their ages than youth are in the country.</span>