Task: distinguishing features of business negotiations in different countries.
First of all I'd like to say that contemporary world forces you to follow the leader, which now consists of several countries, and negotiations are not exception. There are dozens of rules and tactics you cannot avoid using. And while those guide lines are considered to be handy and useful, some still refer to the past century as the last, truly golden, age of business.
Yet, in my opinion, in terms of business and negotiations there were even better times. The times Before Christ.
Bargaining was the most used tactics. Were you a king or a mere sailor - you should have used it artfully to have the scales of win-lose on your side, and of course bad outcome might have been a lot worse then nowadays.
Being a representative of modern society I'd add that rarely do people switch back to something they have dropped using long time ago, but if they do, they often regret doing it.