While America was just a sliver of land on the Eastern Seaboard, these founders foresaw a time when it would fill up the entire continent.
As impossible as it must have seemed to most people in the 1940s, a few people in that era in fact foresaw the moon landing.
And I think that helps explain why no one quite foresaw the rise of the Internet: because it doesn't have an offline corollary of its own.
But no one at the time foresaw (what now seems so evident) that this was the only way an army of eight hundred thousand men--the best in the world and led by the best general--could be destroyed in conflict with a raw army of half its numerical strength, and led by inexperienced commanders as the Russian army was.
How would you define foresaw? Add your definition here.