Based on the clue 'coined by the chemist jb van helmont the word gas ...', what is the answer?

Based on the clue 'coinciding with the 84 olympics in la was a memori...', what is the answer? What is associated with: coinciding with the worlds fair the first olympic games in the us opened in this city may 14 1… What is associated with: coined by a 9 year old circa 1940 its a 1 followed by 100 zeros? Based on the clue 'coined by jonathan swift its come to mean any tiny...', what is the answer? What is associated with: coined by the columbian centinel in july 1817 this era often describes monroes 2 terms? What is associated with: coined in 1899 this word suggests that things like rivers boundaries affect nations foreign af… What is associated with: coined in 1944 by politician maury maverick derived from an animal noise it means unintelligib… Based on the clue 'coined in the 70s the term ebonics comes from thes...', what is the answer?