p laces ▁where ▁mer ch ants ▁find ▁their ▁way ." ▁G row th ▁of ▁wealth ▁and ▁increasing ▁needs ▁of ▁production ▁always ▁stim ulate ▁population ▁growth . ▁Unfortunately , ▁this ▁did ▁not ▁suff ice ▁sole ly ▁in ▁Sar ai . ▁The ▁acc ret ion ▁of ▁the ▁dwell ings ▁in ▁the ▁region ▁transformed ▁the ▁capital ▁into ▁the ▁center ▁of ▁a ▁large ▁Muslim ▁government , ▁giving ▁it ▁the ▁appropriate ▁aspect ▁and ▁status . ▁Ö z ▁Beg ▁actually ▁came ▁to ▁build ▁a ▁new ▁city , ▁which ▁received ▁the ▁official ▁name ▁Sar ay ▁al - J ed id ▁or ▁New ▁Sar ai . ▁ ▁Rel ations hip ▁with ▁Russian ▁princes ▁▁ ▁Ö z ▁Beg ▁supported ▁the ▁earliest ▁princes ▁of ▁Mus c ovy — his ▁brother - in - law ▁Y ury ▁of ▁Moscow ▁( or ▁Y uri ) ▁and ▁Y ury ' s ▁successor ▁Ivan ▁Kal ita ▁( or ▁Ivan ▁D ani il ov ich , ▁later , ▁Ivan ▁I ▁of ▁Moscow ) — ag ain st ▁their ▁relatives , ▁the ▁west ward - lean ing ▁Prin ces ▁of ▁T ver . ▁Four ▁of ▁these ▁latter ▁r ul ers — M ikh ail ▁of ▁T ver , ▁his ▁sons ▁D mit ry ▁( or ▁D mit ri ; ▁nick named ▁The ▁Ter rible ▁E yes ) ▁and ▁Alexander ▁Mik h ail ov ich , ▁( or ▁Aleks andr ) ▁and ▁his ▁grand son ▁The odor ▁( or ▁F y odor ) — w ere ▁all ▁killed ▁in ▁Sar ai ▁at ▁Ö z ▁Beg ' s ▁beh est .