What does "Frontier Period" mean? Well, in reality, it covers quite a lot... In fact, the Frontier Period covers so much time in history, we just HAD to make a separate area for it. Ideally, all this we have listed in this section should be in their respective time periods, F&I in the 1600-1800 Time/Area, Fur Traders/Trappers in 1800-1860, Trekking in both. However, to us, it just seems logical to put "like-stuff" with like-stuff!