Based on the clue 'at 12 million square miles its the largest country...', what is the answer?

What is associated with: at 11204 feet the saharas highest point is emi koussi an extinct volcano in this country with… What is associated with: at 1136 feet the amoco building is the second tallest in this us city? What is associated with: at 1149 feet this citys stratosphere tower is the tallest structure west of the mississippi? What is associated with: at 1159 pm of the last episode of season one this characters wife teri is found dead shot by n… What is associated with: at 1200 noon april 22 1889 settlers began the rush to claim former indian land in this territo… What is associated with: at 1203 pm august 9 1974 he was sworn in as president in the east room of the white house? What is associated with: at 12139 feet mount gunnbjorn is the highest point on this the worlds largest island? What is associated with: at 1290 feet below sea level the worlds lowest road lies along the shores of this sea?