Seeked should be sought or were seeking . I think it would read better with the era of bonanza , or the bonanza era , since you are talking about a particular era that existed before.
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InterventizioI've looked up the meaning of "bonanza", and it seems to refer to something religious, like the manna *** made rain from the sky ...Actually, I found this pretty funny. In the US we associate "bonanza" with an old TV show with that name, and it's about cowboys in the Wild West. I can't imagine *** in chaps and cowboy boots.