Why was NORAD formed?

Answer 1

When the United States was at war with Russia the United States thouht that their enemys might come up from the north in an aircraft and they would fly over Canada into the United States so now Norad was formed so that if any plane tried fly up North but was undentified Norad would tell them to land if they didnt the organization would shoot the plane down

In simple terms,Norad is a group of Canadians and Americans who patrol the north from any threats