Why does the English Buddhist terminology come from Sanskrit by default instead of Pali?

Duhkha instead of dukkha, dharma instead of dhamma, karma instead of kamma, nirvana instead of nibbana, etc. Arguably Pali has a more organized corpus and a live community of speakers? So why Sanskrit? I got this question because I tried to search for some original texts. There are plenty annotated, parallel, digitalized Pali resources online. But sanskrit resources are a mess, and are mainly in the form of ademic papers.