I believe the setting is in Barbados in the 1930's
Frederick Jackson Turner and the frontier. A year after the Oklahoma Land Rush, the director of the U.S. Census Bureau announced that the frontier was closed. The 1890 census had shown that a frontier line, a point beyond which the population density was less than two persons per square mile, no longer existed.
I hope that helped!!!
The constitution is similar to the articles of confederation
French revolution
17,000 people died in the French revolution