ChatGPT4 made some good points:

Here are some factors that have contributed to the increasing polarization:

Historical Context: From its inception, the U.S. had deep political divisions. The Federalists and Anti-Federalists were sharply divided over the creation of a strong central government in the late 18th century. Over time, issues like slavery, states' rights, and industrialization caused significant rifts.

Two-Party System: The U.S. predominantly has a two-party system. This tends to create a binary choice for voters, which can exacerbate polarization. Over time, as parties realign and consolidate around specific issues or identities, divisions can become more pronounced.

Media Landscape Evolution: The rise of cable news in the 1980s and 1990s, and later the internet and social media, has played a role in deepening polarization. News outlets and platforms can cater to specific ideological niches, leading to echo chambers where viewers are only exposed to information that reinforces their preexisting beliefs.

Gerrymandering: The practice of redrawing electoral districts to favor one party over another can create "safe" districts where politicians are more worried about primary challenges from their own party's extremes than about general election threats from the opposing party. This can push politicians further to the left or right.

Campaign Finance: The way campaigns are financed, especially after decisions like the Supreme Court's Citizens United ruling, allows for significant amounts of money to be poured into politics. This can give disproportionate influence to certain groups or individuals, potentially exacerbating polarization.

Cultural and Social Shifts: Factors such as urbanization, education, and changes in religious affiliation can contribute to political polarization. As these shifts occur, they can create a sense of cultural war or identity politics, further dividing groups along political lines.

Political Leadership: Leaders can either bridge divides or deepen them. At various times, American leaders have taken adversarial stances that have contributed to the climate of polarization.

Economic Inequalities: Growing economic disparities can exacerbate feelings of disenfranchisement and lead to increased polarization. People may feel that the "other side" doesn't represent their interests, leading to a lack of trust in opposing parties or politicians.

Geographic Polarization: There's an increasing trend of people living in areas that are politically homogenous. Urban areas tend to lean Democratic, while many rural areas lean Republican. This geographical sorting reinforces political beliefs and reduces exposure to opposing views.

Feedback Loop: As polarization increases, trust in the opposing party decreases, leading to a feedback loop where compromise becomes increasingly difficult.

While polarization in politics is not unique to the U.S., the combination of the aforementioned factors has made it particularly pronounced in recent decades. However, history also shows that the country has faced deep divisions before and has found ways to address or move past them. The challenge is understanding the underlying causes and working towards remedies that can foster dialogue and compromise.

Then I asked if capitalism, may have something to do with it also.

Yes, capitalism and its dynamics can certainly play a role in political polarization. Here's how:

Economic Inequality: One of the criticisms often levied against capitalism, especially in its less-regulated forms, is that it can lead to significant economic inequality. As wealth accumulates among the top echelons of society, those left behind can feel economically and politically disenfranchised. This can lead to resentment and division, with political factions forming around pro-business interests and worker or populist interests.

Consumer Culture and Identity: Capitalism's emphasis on consumerism can influence how people see themselves and others. As products and brands become intertwined with identity, political beliefs can also become commodities to be marketed and sold. This can further entrench people into particular ideological camps.

Media Commercialization: In a capitalist system, media outlets are often profit-driven. This can lead to sensationalism or the creation of echo chambers, where outlets cater to specific political or ideological demographics to maintain and grow their audience.

Corporate Influence in Politics: With capitalism, especially in systems where campaign finance regulations are lax, corporations and wealthy individuals can exert significant influence on political processes. This can lead to perceptions (or realities) that politicians cater to corporate interests over those of the average citizen, fueling distrust and polarization.

Globalization and Job Displacement: Capitalism's search for efficiency and profit can lead to phenomena like outsourcing. This can result in job losses in certain sectors or regions, leading to economic anxiety. Politically, this can manifest in protectionism, anti-immigration sentiments, and a polarization between those who see globalization as an opportunity versus those who see it as a threat.

Differing Economic Philosophies: Capitalism, as an economic system, isn't monolithic. There are varying degrees and types of capitalism (e.g., laissez-faire capitalism vs. welfare capitalism). These differences can lead to political divisions, with some advocating for more government intervention in the market and others pushing for less.

Financial Crises: Episodes like the 2008 financial crisis can exacerbate political divides. In the aftermath of such events, there are often debates about the role of regulation, corporate greed, and government bailouts, which can further polarize public opinion.

So my take is that the binary choice in politics created a major issue straight from the start. Life is too complicated to put in just two categories, but in the US you seem to manage it. And these political boundaries are very much geograhpy based too, which makes of makes it easy to cater to the polarization, which made it easy to maintain. Then you add to that a culture that favors capitalism and now you've got the beginnings of a dumpster fire. Voters can be treated as consumers and consumers as voters. Perhaps the age of mass media is where it really started to go wrong. Essentially you end up with news channels such as Fox news which send out a lot of propaganda for the republic party. Once you've got a good proportion of your population in a brainwashed state you're in a pretty bad spot.