▁of ▁the ▁Wh ak at ane ▁Bor ough ▁Council ▁( 1 9 1 7 – 1 9 1 9 ) ▁and ▁the ▁Wh ak at ane ▁Har bour ▁Board ▁( 1 9 2 3 – 1 9 3 1 ). ▁ ▁References ▁ ▁Category : 1 8 8 4 ▁birth s ▁Category : 1 9 5 8 ▁death s ▁Category : New ▁Zealand ▁M ā ori ▁public ▁servants ▁Category : Pe ople ▁from ▁Wh ak at ane ▁Category : N g ā ti ▁A wa ▁Category : Te ▁Wh ā n au - ā - A pan ui ▁Category : M ā ori ▁polit icians ▁Category : New ▁Zealand ▁city ▁coun c ill ors <0x0A> </s> ▁Theory ▁of ▁interven ing ▁opportun ities ▁attempts ▁to ▁describe ▁the ▁lik elihood ▁of ▁migration . ▁Its ▁hypothesis ▁is ▁that ▁this ▁lik elihood ▁is ▁influenced ▁most ▁by ▁the ▁opportun ities ▁to ▁sett le ▁at ▁the ▁destination , ▁less ▁by ▁distance ▁or ▁population ▁pressure ▁at ▁the ▁starting ▁point . ▁ ▁St ou f fer ' s ▁law ▁of ▁interven ing ▁opportun ities ▁states , ▁" The ▁number ▁of ▁persons ▁going ▁a ▁given ▁distance ▁is ▁directly ▁proportional ▁to ▁the ▁number ▁of ▁opportun ities ▁at ▁that ▁distance ▁and ▁in vers ely ▁proportional ▁to ▁the ▁number ▁of ▁interven ing ▁opportun ities ." ▁▁ ▁St ou f fer ▁the or ises ▁that ▁the ▁amount ▁of ▁migration ▁over ▁a ▁given ▁distance ▁is ▁directly ▁proportional ▁to ▁the ▁number ▁of ▁opportun ities ▁at ▁the ▁place ▁of ▁destination , ▁and ▁in vers ely ▁proportional ▁to ▁the ▁number