They would possibly not be able to do certain things anymore
The French and Indian War was fought to decide if Britain or France would be the strong power in North America. France and its colonists and Indian allies fought against Britain, its colonists and Indian allies. ... France had sent traders and trappers to these territories and had established trading centers there.
The answer is "the theories change to fit current data".
The meaning of a theory is a plan to clarify something, or
an arrangement of leading standards. In science a theory is an all around
substantiated clarification of some part of the common world, natural world, in
light of an assemblage of realities that have been over and over affirmed
through perception and examination.
Something covered by land and no coastline.