Is your score positive? You win! (Some players win more than others.)
A woman needs a man like a fish needs a saxophone.
Looking at rule 1.3.3, question is how does the order work in an exploration round. Does each Nation run through it's own substeps altogether or do you alternate between Nations for each substep?
Each nation takes its entire operating turn: move, revenue, ships.
Does Nation A moves, then Nation A collect revenue, then Nation A buys ships; then Nation B moves, Nation B collects revenue, then Nation B buys (and so on through all the Nations based on prestige ranking)