Was Jesus' Gospel only intended for the "known world" at the time?
Matthew 28:19
19 ¶Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
It seems illogical and unreasonable to believe in a God who would take the position: "When you Evangelicals finally invent big boats to take their missionaries across the sea in 1500 years or so, then Jesus can be a Savior to the western Hemisphere too...but not until then."