Wait what was the point of this when you already answered it?
The European nation that colonized India Australia and as well as North America was great Britain
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.
War caused production rates to go up which led to increased economy and promoted womens rights.
A bill goes ahead and reaches the respective committee after the senate/house votes on it and it get approved.