Why do Japanese Kanto people discriminate against Kansai people?

At present, there are two centers in Japan, one is the city circle with Tokyo as the core, called "Kanto"; One is the city circle centered on the ancient capitals of Nara and Kyoto, which is called "Kansai". In life, the difference between Kanto and Kansai is more obvious-when you move from Kanto to Kansai, the first thing to consider is whether you have enough money to change electrical appliances. When electricity was turned on, Kanto people studied the American model, while Kansai people insisted on learning Europe. As a result, the power grid specifications of the two metropolitan areas are quite different-the electrical appliances commonly used in Kanto are simply not used in Kansai, so the Japanese electrical appliances sold now are basically "compatible" with the European and American power grid specifications. Politically, Kanto people are the big ticket market of the Liberal Democratic Party, and Kanto people oppose it. The votes are for the opposition-ask them why, and they can't tell you why. If you are in a hurry, you will be thrown a sentence "We just don't think the Liberal Democratic Party is a good person"-well, it doesn't matter why. If Kanto people support the Liberal Democratic Party, then we Kansai people just don't vote for the Liberal Democratic Party. In terms of language, the "national language" of Japan now is the Kanto accent of Tokyo. People from other parts of Japan come to Kanto, especially Tokyo, and honestly speak Kanto accent-except Kansai people, as long as they don't have to speak Kanto dialect for any reason, their mouths are definitely Kansai accent. As for whether this Kansai accent has made many Japanese people don't understand it, it doesn't matter. Anyway, Kansai people want to speak their own Kansai accent in kanto region. On the contrary, in many schools, Kansai dialect is mischievously listed as an elective "foreign language" alongside Portuguese, Italian and other languages.