I don’t deny the existence of alternatives, the choice to distinguish U.S. history from Irish history &etc. is entirely mine and follows from the bright-line definition of national identity I have used.
The main argument of Kimstu seems to be, because U.S. history is broader than the history of the people who considered themselves part of the United States, my concept of national identity is wrong. My counterargument is that, in my opinion, U.S. history is a narrower topic than she implied; I doubled down.
~Max