Check Why do three main forms of Buddhism exist?
Buddhism began in different countries.
Buddhism spread through different kings.
Buddhists developed some different ideas and practices.
Buddhists use different hand signals for prayer and meditation.
Why do three main forms of Buddhism exist?

It is written in the constitution saying all beliefs are allowed in the u.s. justice will be surved to everyone no matter what the color of that person is. and that all people are equal not matter there color is the u.s. that was a lie though because black people were still treated poorly, and there were places that was white people only such as hospitals, schools, bathroom, and more.