▁First ▁sons ▁inherited ▁more ▁than ▁the ▁other ▁sons ▁among ▁ 1 1 ▁soci eties ▁studied . ▁Among ▁the ▁Tod as , ▁both ▁first ▁and ▁last ▁sons ▁inherited ▁more ▁than ▁the ▁other ▁sons . ▁Last ▁sons ▁inherited ▁more ▁than ▁the ▁other ▁sons ▁among ▁the ▁L olo ▁and ▁the ▁Y uk agh ir , ▁and ▁inherited ▁less ▁among ▁the ▁Lu o . ▁The ▁people ▁found ▁to ▁have ▁the ▁greatest ▁number ▁of ▁custom s ▁fav ou rable ▁to ▁first ▁sons ▁in ▁the ▁study ▁were ▁the ▁T sw ana , ▁followed ▁closely ▁by ▁the ▁Az ande . ▁The ▁people ▁with ▁the ▁greatest ▁number ▁of ▁custom s ▁favor able ▁to ▁last ▁sons ▁in ▁their ▁study ▁were ▁the ▁L olo . ▁This ▁study ▁confirmed ▁eth n ograph ers ' ▁claims ▁that ▁custom s ▁favor able ▁to ▁first ▁sons ▁were ▁common ▁in ▁South ▁Asia , ▁Aust ron esia ▁and ▁Sub - S ah aran ▁Africa , ▁while ▁custom s ▁favor able ▁to ▁last ▁sons ▁were ▁common ▁among ▁the ▁eth nic ▁minor ities ▁of ▁South west ▁China . ▁ ▁The ▁only ▁custom ▁that ▁distinguished ▁between ▁sons ▁among ▁the ▁D ag or ▁Mong ols ▁was ▁that ▁first ▁sons ▁received ▁more ▁respect ▁from ▁his ▁sib lings ▁and ▁last ▁sons ▁received ▁less ▁respect ▁from ▁their ▁sib lings . ▁This ▁contradict s ▁those ▁theories ▁that ▁maintain ▁that ▁pe op les ▁of ▁the ▁Asian ▁ste ppe ▁had ▁strong ▁custom s ▁favor able ▁to ▁first ▁or ▁last ▁sons . ▁In ▁fact , ▁the ▁ind igen ous ▁American ▁pe op les ▁had ▁significantly ▁more ▁custom s ▁favor able