Was all the land in the world together at one point?
Answer From The Annual Reading Schedule - Week 2 Notes For Genesis: It appears to be so according to Genesis 10:25. This united land mass is often known by people as "Pangaea", but the view on when that existed seem to be wrong. Whereas people today speculate the land was united much longer ago, we see that the land was actually only split apart sometime between 1757 and 1996 (i.e. only 1,757-1,996 years since human life began approximately ~6,000 years ago). Perhaps the earthquakes and events that split the land apart were simply much more catastrophic or frequent than understood by people today, similar to how the flood created layers upon layers in the ground very quickly rather than those being something that occurred slowly over time as some speculate. The year estimate from 1757-1996 comes from the life of Peleg which began when he was born in 1757 and ended when he died in 1996. The name "Peleg" means "Half" and it states in Genesis 10:25, "for in his days was the earth divided". Perhaps also, this could be referring to Ever, meaning the land was divided in the days of Ever which is why he named his son Peleg which means "Half". If this is the case, then the land could have been divided between 1723 when Ever was born through 2187 when Ever died (yes, Ever outlived his son Peleg). A speculation on how this divide of the land would look can be seen in the below GIF picture animation (materials to create this GIF courtesy of the U.S. Geological Survey):
