Meanings of general manners in English

As a rule, Northern and Southern troops have the same general manners and appearances.

How could the consistency, which was wanting in a political system, be expected in the general manners of the nation?

Look at the general manners, the deportment, the forbearance, of all communities where duelling is recognised as an agent of society.

Indeed his general manners and conversation were not only pleasing, but even interesting; and I struggled to believe his insensibility respecting the Dane philosophical fortitude.