How do you know there were people in NA in AD70? Besides the Lamanites and Nephites.
But seriously, we get our definition of Bible words primarily from the Bible. If the Bible uses a particular word in a particular way, then that is the way it should be understood. We don’t need the Oxford Dictionary definition. In fact sometimes that not helpful at all.
And it came to pass in those days that a decree went out from Caesar Augustus that all the world should be registered. (Luke 2:1)Were the folks living in NA registered?
3 We give thanks to the God and Father of our Lord Jesus Christ, praying always for you,According to Paul’s testimony, using the Bible definition of world, this is precisely what had happened even in that day.
4 since we heard of your faith in Christ Jesus and of your love for all the saints;
5 because of the hope which is laid up for you in heaven, of which you heard before in the word of the truth of the gospel,
6 which has come to you, as it has also in all the world, and is bringing forth fruit, as it is also among you since the day you heard and knew the grace of God in truth (Col. 1)
The problem with futurists is that they refuse to let the Bible speak for itself, preferring their human devices and imaginations.
I do not have time now ... but your conjecture is easily refuted with a lexicon. I shall post later tonight.