Patriotism is a misnomer, based on the LAtin patria, a word which means lineage. It has a male-lineage root because lineage (inheritance of name, possessions and family identity) was patrilinear in Roman and Greek dominant societies.
It is a misnomer because it does not really have to do with love of country except on a shallow, rhetorical basis.
It is the defense and perpetuation of a set of agreements which one believes will best serve his well-being in the future, and the well-being of groups with whom those agreements are shared.
Being an American, however, has much less to do with loving a territory than it does with having a strong preference for the social agreements that define the group.
Obviously, those agreements prosper when they have territory on which to be implemented, so defending the land is a natural close concomitant.