Since 1450: The invention of the caravel in Portugal further helps developing oversea trade and colonization. The Dutch sail down the coast of Atlantis, found settlements (i.e. trading places) in OTL Carolina, Georgia. After the improvements in the first half of the century, the church gradually becomes more corrupt. The riches the Castillians took in Morocco already increased their wishes, and when their share from Atlantis and Africa is rolling in, they're demanding even more. 1479/80: Sweden makes war with Norway, occupies and annexes Norwegian province of Jämtland.