), ▁stock bre eding ▁( 6 5 0 0 ▁BC ), ▁met all ur gy ▁( 5 5 0 0 ▁BC ), ▁the ▁p low ▁( 4 5 0 0 ▁BC ), ▁gold ▁( 4 5 0 0 ▁BC ), ▁domestic ated ▁horses ▁( 4 0 0 0 – 3 5 0 0 ▁BC ) ▁and ▁whe e led ▁vehicles ▁( 4 0 0 0 – 3 4 0 0 ▁BC ). ▁Hor se ▁bre eding ▁is ▁thought ▁to ▁have ▁origin ated ▁with ▁the ▁S red ny ▁St og ▁culture , ▁semi - nom adic ▁past oral ists ▁living ▁in ▁the ▁forest ▁ste ppe ▁zone , ▁now ▁in ▁Ukraine . ▁Whe e led ▁vehicles ▁are ▁thought ▁to ▁have ▁origin ated ▁with ▁F unnel be aker ▁culture ▁in ▁what ▁is ▁now ▁Poland , ▁Bel arus ▁and ▁parts ▁of ▁Ukraine . ▁ ▁According ▁to ▁Mall ory ▁and ▁Adams ▁( 2 0 0 6 ), ▁lingu istic ▁analysis ▁shows ▁that ▁the ▁Pro to - Ind o - Europe an ▁lex icon ▁seems ▁to ▁include ▁words ▁for ▁a ▁range ▁of ▁invent ions ▁and ▁practices ▁related ▁to ▁the ▁Second ary ▁Product s ▁Revolution , ▁which ▁post dates ▁the ▁early ▁spread ▁of ▁far ming . ▁On ▁le xico - c ult ural ▁d ating , ▁Pro to - Ind o - Europe an ▁cannot ▁be ▁earlier ▁than ▁ 4 0 0 0 ▁BC . ▁ ▁According ▁to ▁Anthony ▁and ▁Ring e ▁( 2 0 1 5 ) ▁the ▁main ▁ob jection ▁to ▁the ▁An atol ian ▁hypothesis ▁is ▁that