With hindsight, we see that the Soviet Union never had a chance of world domination, but we didn't know that then.
I think that the only way to teach is by example, as children will more easily follow what they see you do than what you tell them to do.
As soon as the news of the Cabot voyages reached the King of Portugal he arranged to send an expedition of discovery to the far north-west, perhaps to find a northern sea route to Eastern Asia.

