Avi
Interesting do you have a source for that?
Though Im curious. Which halcahos only applied then?
Issur to lend with ribis (without a heter iska which isnt lending)?
Issur hasagas gevul?
Issur of onaas maamon?
The inability ot sell land long term?
KAshrus?
Tefilin?
what other halachos only apply in small closed communities?