How has Judaism evolved into a culture?

Judaism eveolved in a cultur due to fact that it didn't spred outside of jewish people, Jews believd that when Messiah will come then their belief will spred onother nations, Christians belive that Jesus Christ was messaiah that is why they started to spred his teaching and teachings of Judaims in which Christianity is rooted after lost of political soverinigty in 2d century jews made their customs even more connected with their rleigion to prsereve their culture, that is short descrpition