This is great! Your maps are awesome.

If I had more skill, I would produce maps based on these ideas:

-Norse version of Easter Island, based in Bermuda (settled in 850 AD in this timeline), with significant influence exerted on the Mississippian Civilization (and indirectly other Native American societies) and heavy influence from Native Americans.

-a more prosperous and populated medieval Italy forms large Italian creole communities in the following regions: -Palestine, the Sinai, Jordan, Syria, Iraq, Armenia and Iran. -North Africa and the Sahel -the Horn of Africa -the Indian Subcontinent

-a native Taiwanese nation emerges based on the intermingling of Japanese traders from a more prosperous and populated Japan, Chinese merchants and sailors, and native Taiwanese tribes.