Vasco de Gama was the first explorer to reach India
One reason could be that since England has colonized most of the countries in the past, the English language has been spread around. Another reason would be since English speaking countries like the US and Britain are powerful economically, knowing English is very important when making trades and business deals.
He swore that he will get Germany out of the Great Depression that they were having at the time. He also swore that he will get vengeance to the U.S., Britain, Japan etc... since they seized land, military and almost everything away from the Germans.
The challenges humans faced is the climate weather and temperature. Which means they had to learn to adapt and have survival skills. Because of these factors, they have the issues of finding a settlement and growing crops and domesticating the animals. Technically, the transition between the Paleolithic and Neolithic is the turning point for the nomads. Where people began to have a settlements, easier growing foods besides hunting and gathering, have their own domestic animals to help them do the fields and etc. Which domesticating an animal led to selective breeding.
Land surveyor is the job he was beginning when he was 17.
I hope this helps. :)