Random attacks by Indian tribes. The frontier had swamps-to-mountainness terrain. Seeds didn't work in all parts of America, some lived healthy in one area while the same seed could die somewhere else there.
yes Britain has dominated exploration in the end. yes I think our nation would have existed.
Thots and they know how to twerk better (;
Answer: Mahan was one of the foremost proponents of the “vigorous foreign policy” referred to by Turner. Mahan believed that the U.S. economy would soon be unable to absorb the massive amounts of industrial and commercial goods being produced domestically, and he argued that the United States should seek new markets abroad.