<span>The main cause for Japan's isolationism was to avert the spread of Christianity.
</span>Several Edicts were issued throughout the early years of the Tokugawa Shogunate, declaring isolation, Each edict grew more and more forceful in its condemnation <span>of Christianity.</span>
It rapidly increased due to an increase in immigration
America was named America after Amerigo Vespucci. Vespucci was an early explorer, who lived around the same time as Christopher Columbus.