Our user OneWorld has created an “Old World” map for Old World. This map includes the whole Old World, Eurasia and Africa, and in addition also Australia. So everything, which doesn’t need advanced sailing technolgy can be reached. If you want to lead Babylon to world domination, now is the time ;).
Have a look at the map here: https://forums.civfanatics.com/threads/map-the-great-old-world.674804/