Christopher Columbus is the explorer who is credited for discovering America. Of course, there were already people living in America at the time who we call Native Americans. There even was a European, Leif Ericsson, who had been to the Americas before. However, it was Columbus' voyage that started the exploration and colonization of the Americas.
There were only 23 letters in the Latin alphabet, while the modern English alphabet has 26. Also, there were no lowercase letters in the Latin alphabet.
Hope this helps :)
The name of the B-52 bomber was the Bockscar.