Never been a big fan of Yahtzee, it seems mostly like it was intended to be a way for kids to amuse themselves as much as anything. A step up from say "Hungy, Hungry Hippos" before getting to even more advanced games.
As far as Monopoly goes, well I disagree with some of what people are saying. To my knowlege it was invented during The Great Depression and was intended to be a sort of upbeat escapist fantasy. Basically the illusion of prosperity and such combined with some analogies to what was going on. I also remember hearing somewhere that one of the reasons why the game became so popular was due to a resurgence in World War II where allegedly Parker Brothers were hiding escape tools like files, wire saws, and the like inside the boards. Despite a lot of comments about how horrible the Nazis were, they actually treated a lot of their prisoners very humanely unless they were Jewish, Gypsies, Homosexuals, etc. While some allies were sent to work in factories and such (many of which were bombed by their own side despite the human shield strategy), most who were sitting in prisons were allowed humanitarian aid like board games and such.
Allegedly goverment money went into mass production of monopoly for this reason, and due to the wide distribution and such it ensured it becoming a staple.
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As far as games about backroom dealing and such, really the only game I'm aware of that actually encourages that in rules that I've read is "Dipolmacy". Diplomacy has ruined marriages and such especially at gaming conventions and competitive play.
There are probably others, but that's the only "board game" I can verify off the top of my head.
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Also I will say that Monopoly is as much a game of chance as anything, players have very little control over the outcome of the game due to the cards, and luck of the dice. There is very little to negotiate unless you allow players to selectively choose who faces the penelties on their owned properties and such. There CAN be some strategies and such in a very long running game where a lot of houses and hotels get built up, but the odds being what they are it can be very rare for a game to last quite that long. I've only played a few games that really got moving to the point of any substantial house/hotel building.