en_tn/gen/10/32.md

These are the clans

This refers back to all the people listed in chapter 10.

according to

"listed by"

From these the nations separated and went over the earth

"From these clans the nations divided and spread over the earth" or "These clans divided from each other and formed the nations of the earth"

after the flood

This can be made more explicit: "after the flood destroyed the earth" (See: rc://en/ta/man/translate/figs-explicit).