What is associated with: about 1940 a us gambling craze involved use of one type of this childrens toy?

Based on the clue 'about 176 billion of these striped treats are sold...', what is the answer? Based on the clue 'about 180 million years ago mammals evolved from t...', what is the answer? What is associated with: about 180000 black soldiers served in the union army 23 won this highest military award? What is associated with: about 1855 he popularized the use of the laboratory burner now named for him? Based on the clue 'about 2 long at your birth it ran from your moms p...', what is the answer? Based on the clue 'about 2 million in northwestern spain speak galici...', what is the answer? What is associated with: about 2 million people visited this 984 foot tall landmark in its first year 1889? Based on the clue 'about 20 miles northwest of raleigh this city is a...', what is the answer?