What is associated with: april 15 1450 was a taxing day for the english army defeated at formigny near the end of this long war?

What is associated with: april 11 1951 truman relieves this man of his commands in the far east? What is associated with: april 13 1743 july 4 1826? 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 1644 is recognized as the last month this dynasty was in power in china? 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 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?