Americans are trained from childhood to question ,analyze and search.
For example: it’s frequently one can find in the US that junior staff members dare to challenge older executives or ague points with them.
Americans have little feeling for “rank”, especially social rank. For example: Americans do not have family tittles to show class distinctions. If a person is distinguished, what they use instead is occupational title.
Such as Ambassador Jones, Senator Smith, Judge Harley, General Clark, Dr. Brown. Father white, Bishop Grey.
If you doubt as to the manner of address, never hesitate to ask. If you want to show your respect, you can always use “Sir” or “Ma’am” . To some people, “Mr.”, “Mrs.” or “Miss” seem to be stiff and formal .
American Character and Customs