9 1 9 ”. ▁According ▁to ▁his ▁theory , ▁determ ination ▁of ▁public ▁exp end iture ▁and ▁tax ation ▁will ▁happen ▁on ▁the ▁basis ▁of ▁public ▁prefer ences ▁which ▁they ▁will ▁reve al ▁themselves . ▁Cost ▁of ▁supp lying ▁a ▁good ▁will ▁be ▁taken ▁up ▁by ▁the ▁people . ▁The ▁tax ▁that ▁they ▁will ▁pay ▁will ▁be ▁revealed ▁by ▁them ▁according ▁to ▁their ▁capac ities . ▁ ▁C aus es ▁of ▁growth ▁of ▁public ▁exp end iture ▁There ▁are ▁several ▁factors ▁that ▁have ▁led ▁to ▁an ▁enorm ous ▁increase ▁in ▁public ▁exp end iture ▁through ▁the ▁years ▁▁ 1 ) ▁Def ense ▁exp end iture ▁due ▁to ▁modern ization ▁of ▁defense ▁equipment ▁by ▁the ▁n avy , ▁army ▁and ▁air ▁force ▁to ▁prepare ▁the ▁country ▁for ▁war ▁or ▁for ▁prevent ion ▁causes - for - g row th - of - public - exp end iture . ▁▁▁ 2 ) ▁Population ▁growth ▁– ▁It ▁increases ▁with ▁the ▁increase ▁in ▁population , ▁more ▁of ▁invest ment ▁is ▁required ▁to ▁be ▁done ▁by ▁government ▁on ▁law ▁and ▁order , ▁education , ▁infrastr ucture , ▁etc . ▁invest ment ▁in ▁different ▁fields ▁depending ▁on ▁the ▁different ▁age ▁group ▁is ▁required . ▁▁ 3 ) ▁W elf are ▁activities ▁– ▁w elf are , ▁mid - day ▁me als , ▁p ension ▁prov isions ▁etc . ▁▁▁ ▁Pro vision ▁of ▁public ▁and ▁utility ▁services ▁– ▁provision ▁of ▁basic ▁public ▁goods ▁given ▁by ▁government ▁( the ir ▁maintenance ▁and ▁installation ) ▁such ▁as ▁transport ation . ▁ ▁Acc