Answer: "Now there were staying in Jerusalem
God-fearing Jews from every nation under heaven," (verse 5).
MORE INFORMATION AND/OR OTHER SCRIPTURE REFERENCES:
Because of Pentecost, there were Jews in Jerusalem from
"every nation under heaven." From the list of
nations in verses 9-11, this would have been the
Mediterranean world, not the whole world (globe). Of course,
when these people went back home, the Gospel would continue to
spread.