1) ruled is in past tense
2) "over territory in" establishing geographical context
The title starts with "People in present-day Austria" (implies the people there now) then switches to past tense and adds 2700 years ago.
No, I don't think it implies this. That would just be "people in Austria"; or if you want to make the presentness explicit, "people in Austria now".
> then switches to past tense
It's not a switch. "People in present-day Austria" doesn't have any tense (there are no verbs).
Honestly, I don't care what you think. It confused me. What more do you want from me?
1) ruled is in past tense
2) "over territory in" establishing geographical context
The title starts with "People in present-day Austria" (implies the people there now) then switches to past tense and adds 2700 years ago.