0 0 0 ▁years ▁old . ▁ ▁H omo ▁s api ens ▁settled ▁in ▁Brit t any ▁around ▁ 3 5 , 0 0 0 ▁years ▁ago . ▁They ▁replaced ▁or ▁absor bed ▁the ▁Ne ander th als ▁and ▁developed ▁local ▁indust ries , ▁similar ▁to ▁the ▁Ch ât el per ron ian ▁or ▁to ▁the ▁Mag d alen ian . ▁After ▁the ▁last ▁gla cial ▁period , ▁the ▁war mer ▁climate ▁allowed ▁the ▁area ▁to ▁become ▁heavily ▁wood ed . ▁At ▁that ▁time , ▁Brit t any ▁was ▁populated ▁by ▁relatively ▁large ▁communities ▁who ▁started ▁to ▁change ▁their ▁l ifest yles ▁from ▁a ▁life ▁of ▁hunting ▁and ▁gather ing , ▁to ▁become ▁settled ▁far mers . ▁Agricult ure ▁was ▁introduced ▁during ▁the ▁ 5 th ▁mill en ni um ▁BC ▁by ▁migr ants ▁from ▁the ▁south ▁and ▁east . ▁However , ▁the ▁Ne ol ith ic ▁Revolution ▁in ▁Brit t any ▁did ▁not ▁happen ▁due ▁to ▁a ▁radical ▁change ▁of ▁population , ▁but ▁by ▁slow ▁imm igration ▁and ▁exchange ▁of ▁skills . ▁ ▁Ne ol ith ic ▁Brit t any ▁is ▁character ised ▁by ▁important ▁meg al ith ic ▁production ▁and ▁sites ▁such ▁as ▁Qu elf én ne c , ▁it ▁is ▁sometimes ▁designated ▁as ▁the ▁" core ▁area " ▁of ▁meg al ith ic ▁culture . ▁The ▁oldest ▁monuments , ▁c air ns , ▁were ▁followed ▁by ▁pr inc ely ▁tomb s ▁and ▁stone ▁rows . ▁The ▁Mor b ih an ▁département , ▁on ▁the ▁southern ▁coast , ▁compr ises ▁a