What is associated with: at 80 she stepped down as president of the national american woman suffrage association in 1900?

Based on the clue 'at 75 to 100 pounds this largest south american ro...', what is the answer? What is associated with: at 752 am may 20 1927 this single engine monoplane took off from roosevelt field heading east? Based on the clue 'at 76 this center from china would be a big part o...', what is the answer? Based on the clue 'at 8 letters its the longest word hint its latin', what is the answer? Based on the clue 'at 81 he was the oldest man to sign the us constit...', what is the answer? What is associated with: at 81 this pennsylvanian was the oldest delegate at the 1787 constitutional convention? What is associated with: at 815 am on the 6th of this month in 1945 an atomic bomb was dropped on hiroshima? Based on the clue 'at 82 hes over a foot taller than his best friend ...', what is the answer?