This was a book written by Allan Grantz about a kid named Michael, who was a member of the Hitler Youth, but he and his parents were spies. Michael and his family helped the Allies to send coded messages with the locations of Nazi factories. Projekt 1065, was a prototype Nazi jet plane they used to complete their plan.
Talking to a person you do not know, an email to a business representative, and similar would be situations where someone would have to use formal language.
Women's right to vote. The biggest change was that women felt that they were finally getting able to be equal to men.
Have a nice day! :D
I would say the Hittites and the Celts. The Hittites thrived and disbanded before the beginnings of the Roman empire. The Celts were absorbed by the Romans but were keen to follow their ways.