▁ob e is ance ▁on ▁this ▁occasion ▁being ▁arranged ▁by ▁the ▁s ultan ate ▁to ▁include ▁a ▁very ▁public ▁display ▁where by ▁he ▁bow ed ▁towards ▁Del hi ▁from ▁the ▁r amp arts ▁of ▁O rug all u . ▁The ▁amount ▁of ▁his ▁annual ▁t ribute ▁was ▁changed , ▁becoming ▁ 1 0 0 ▁ele ph ants ▁and ▁ 1 2 , 0 0 0 ▁horses . ▁ ▁The ▁new ▁arrang ements ▁did ▁not ▁last ▁long . ▁T aking ▁advantage ▁of ▁a ▁revolution ▁in ▁Del hi ▁that ▁saw ▁the ▁K hal ji ▁dynast y ▁removed ▁and ▁G hi y as ud din ▁T ugh la q ▁installed ▁as ▁s ultan , ▁Pr at ap ar ud ra ▁again ▁assert ed ▁his ▁independence ▁in ▁ 1 3 2 0 . ▁T ugh la q ▁sent ▁his ▁son , ▁Ul ugh ▁Khan , ▁to ▁defeat ▁the ▁def i ant ▁K ak ati ya ▁king ▁in ▁ 1 3 2 1 . ▁Khan ' s ▁army ▁was ▁r iven ▁with ▁internal ▁diss ension ▁due ▁to ▁its ▁containing ▁fa ctions ▁from ▁the ▁K hal ji ▁and ▁T ug hl u q ▁cam ps . ▁This ▁caused ▁the ▁sie ge ▁on ▁this ▁occasion ▁to ▁last ▁much ▁longer   — ▁six ▁months , ▁rather ▁than ▁the ▁few ▁weeks ▁that ▁had ▁previously ▁been ▁the ▁case . ▁The ▁attack ers ▁were ▁initially ▁rep uls ed ▁and ▁Khan ' s ▁forces ▁retre ated ▁to ▁re group ▁in ▁Dev ag iri . ▁Pr at ap ar ud ra ▁celebrated ▁the ▁apparent ▁victory ▁by