based on your knowledge, why are partisanship and a two-party system significant parts of US politics

Partisanship causes survey respondents to answer political surveys differently, even if the survey asks a question with an objective answer. People with strong partisan beliefs are 12% more likely to give an incorrect answer that benefits their preferred party than an incorrect answer that benefits another party.

following type of cultural development caused people to want and buy new products on the market :

citizens get the vast majority of their political and governmental information from the media, which includes television, print journalism, radio, and now the internet. the media play an important role in connecting people to government.