Greg's view of argument comes from his parents. His father was the head of the family and was to be respected. His mother had a similar set of authority but a different role. India has markets and a history of haggling which would lead me to believe it to be an "argument" culture.
In the US, arguments frequently occur anywhere and everywhere. It is understood that you respect those older than you and those that have authority although it is not a rigid rule. Everyone is allowed to speak publicly although not everyone will be listened to. Public speakers have status and that determines their audience. Verbal arguments are the norm and any physical violence is not tolerated even though it maybe encouraged by spectators. Argument here is used to get ones way, it is usually used as a last resort.