In the years of the early Renaissance a small Ice Age emerged. It slowed down European progress and Asian Progress. The renaissance never happened in the years it happened in OTL. Asia failed with the fall of China and then Europe's economy went haywire. Meanwhile in the Americas, certain tribes started to come together to form empires that never existed in OTL. In 1919 the Europeans finally discover the Americas

TL differences

In Europe the Renaissance never happens until later on. The Asian growth stops a little differently than in OTL. Native American tribes come together to form more Unions. A mini Ice Age comes along. The Americas become another civilization equal in power, sciences, and growth as Europe in OTL.