

I think it was progressive who demanded it to be 3/5 if then conservative had their way they would happily count slaves as two people. It’s was in their favour to do so. Slaves could vote and it inflated their population count which will grant more seat. I’m neither American nor have I been there.
Its paid and not FOSS but you can use it without paying but some QOL features are missing. boot.dev . Its full backend course btw. There are 2 git course. Basic and advanced.