How about the American Revolution? The way I see it, they foreshadowed it when:
Besides, Europe has been more or less completely uncovered in terms of hidden equipment left by "those who came before." With unexplored regions in the soon-to-be United States, there's more for them to find.
Also, they have some nice possibilities with the Stone Masons and the real reasons for the American Revolution to play with.
Ezio commented on the unknown landmass when they pieced together the codex.
Besides, Europe has been more or less completely uncovered in terms of hidden equipment left by "those who came before." With unexplored regions in the soon-to-be United States, there's more for them to find.
Also, they have some nice possibilities with the Stone Masons and the real reasons for the American Revolution to play with.