Taxation without representation, England was taxing the colonies and they had so say in how the world (America) would work.
Some obstacles which prevents third party candidates from winning elections;
Not a well known name, not enough money for campaigning, minority of voters go outside democrats or republicans. However, most of all is the ability to withstand your opponents and go the distance.
Presidential candidates now with more funding towards their campaign have a better chance of winning because they are able to run commercials and have them showed more frequently than others
Answer candidate with more money and benefit hugely for presidential campaigns
D allowing hundreds of thousands of jews refugee in there country