▁the ▁risk ▁of ▁his ▁life ▁above ▁and ▁beyond ▁the ▁call ▁of ▁duty ▁on ▁ 2 0 ▁and ▁ 2 6 ▁April ▁ 1 9 6 7 ". ▁ ▁April ▁ 2 7 , ▁ 1 9 6 7 ▁( Th urs day ) ▁Const ruction ▁of ▁Moscow ' s ▁Ost ank ino ▁Tower , ▁at ▁ ▁the ▁tall est ▁free - standing ▁structure ▁in ▁the ▁world ▁up ▁to ▁that ▁time , ▁was ▁completed ▁with ▁the ▁pla cement ▁of ▁the ▁last ▁anten na ▁on ▁the ▁television ▁transmit ter . Ex po ▁ 6 7 , ▁described ▁as ▁" the ▁largest , ▁cost liest , ▁ga udi est ▁world ' s ▁fair ▁in ▁history " ▁ ▁was ▁dedicated ▁in ▁Montreal ▁as ▁a ▁World ' s ▁Fair ▁to ▁co inci de ▁with ▁the ▁celebr ation ▁of ▁the ▁cent enn ial ▁of ▁the ▁ 1 8 6 7 ▁found ing ▁of ▁the ▁Canadian ▁Confeder ation . ▁Prime ▁Minister ▁L ester ▁B . ▁Pear son ▁ign ited ▁the ▁Ex po ▁Fl ame ▁in ▁the ▁Place ▁des ▁Nations ▁to ▁inaugur ate ▁" The ▁Universal ▁and ▁International ▁Ex hib ition ▁of ▁ 1 9 6 7 ", ▁which ▁would ▁run ▁until ▁October ▁ 2 7 . ▁ ▁Born : ▁Wille m - Alex ander , ▁King ▁of ▁the ▁Netherlands ▁since ▁ 2 0 1 3 . ▁ ▁He ▁was ▁the ▁first ▁boy ▁to ▁be ▁born ▁in ▁the ▁Netherlands ▁royal ▁family ▁since ▁ 1 8 5 1 , ▁and ▁was ▁the ▁great - grand son ▁of ▁former ▁Queen ▁Wilhelm ina ▁(