▁T atar ▁forces ▁in ▁ 1 3 2 7 . ▁Ö z ▁Beg ▁appointed ▁Ivan ▁to ▁position ▁of ▁Grand ▁Duke ▁of ▁Vladimir ▁in ▁ 1 3 3 2 ; ▁that ▁marked ▁the ▁true ▁beginning ▁of ▁the ▁rise ▁of ▁the ▁Mus cov ites . ▁Alexander , ▁after ▁many ▁trav ails , ▁including ▁ex ile ▁in ▁Sweden ▁& ▁Lith u ania , ▁eventually ▁prosper ed ▁in ▁P sk ov , ▁under ▁the ▁patron age ▁of ▁Ged imin as , ▁Grand ▁Duke ▁of ▁Lith u ania . ▁He ▁sent ▁his ▁son ▁F y odor ▁to ▁the ▁Hor de , ▁with ▁t ribute ▁and ▁seeking ▁forg iveness , ▁in ▁ 1 3 3 5 ; ▁the ▁Khan ▁p ardon ed ▁Alexander ▁and ▁he ▁was ▁given ▁the ▁pr inc ely ▁y ar lik ▁to ▁T ver ▁once ▁again ▁in ▁ 1 3 3 7 . ▁ ▁Unfortunately , ▁his ▁greatest ▁enemy , ▁his ▁cousin ▁Ivan , ▁once ▁more ▁set ▁the ▁Hor de ' s ▁Khan ▁against ▁him ▁with ▁the ▁aid ▁of ▁intr igue . ▁Alexander ▁was ▁sum mon ed ▁to ▁the ▁Hor de ▁again ▁and ▁was ▁executed ▁at ▁the ▁hand ▁of ▁Khan ▁Ö z ▁Beg ; ▁T ver ▁was ▁then ▁pill aged ▁and ▁many ▁of ▁its ▁citizens ▁mass ac red . ▁▁ ▁Ö z ▁Beg ▁wel com ed ▁Ivan ' s ▁sons ▁and ▁made ▁S ime on ▁Grand ▁Prince ▁( du ke ) ▁in ▁ 1 3 4 0 . ▁S ime on ▁was ▁given ▁more ▁powers ▁by ▁the ▁Khan ▁to ▁counter ▁Lith u ania ' s ▁growing