What is associated with: april 17 1928 this author grits teeth beds nurse fights in war sits at bar remembers nurse?

What is associated with: april 14 1828 noah webster publishes this type of book? What is associated with: april 14 1865? What is associated with: april 15 1450 was a taxing day for the english army defeated at formigny near the end of this… What is associated with: april 1644 is recognized as the last month this dynasty was in power in china? What is associated with: april 18 commemorates the day in 1980 when this country became zimbabwe? What is associated with: april 19 1956 he takes a gamble in monte carlo makes american movie star his bride? What is associated with: april 2 1990 hollywood stars protest this pesticide which comes in on medfly wings and a spray… Based on the clue 'april 20 may 20 quick decisions are necessary b...', what is the answer?