I think that's correct. The past perfect may have been a stylistic
choice to emphasize the historic element. But I do think the simple
past tense would work. English grammar can get a little squishy here
and there (meaning that a lot of writers bend the rules for style),
which can create a lot of confusion even for english speakers.
Ask an english speaker in the street to explain the "past perfect"
tense and 99% of them won't have a clue. The more complex tenses
rightly cause confusion for non-native speakers because they even
confuse native speakers.
Argggh! Why does everyone assume right away that I'm a non-native speaker? I am bit touchy when it comes to this subject because, yes, I may have once been an immigrant, but I grew up here in Canada, have lived in Vancouver since I was 6, speak English better than my mother tongue, and I deserve to be called a native speaker as much as the next "real" native speaker on these boards. Just because I post on this board asking qusetions relating to grammar, does it mean I'm any less deserving of being termed a "native speaker"?
I know I'm probably taking your comment a bit too far. But my reason for posting on these boards is simply to learn more about the correct way to use words. It really offends me when people automatically assume that about me. Perhaps I should find another board that simply answers questions regarding grammar and whose members don't make snap judgments about others' English level.
And it's not like any of the wordy, convoluted grammar explanations some people like to give on here could be understood by anyone with less than a near native, at least, advanced grasp of English anyway. I find myself always having to carefully pick apart what some of you say. If this board was really aimed towards helping English-learners learn the language, then the "moderators" or "teachers" should put more effort into writing clear, understandable prose as opposed to showing off their writing skills.