There are two, Pioneer 10 and Pioneer 11.
pioneers of what
many pioneers traveled west to bufflalo
Yes many pioneers traveled in groups for safety.
Many pioneers have used this approach to the mountain passes.
5
oregon
railroad
pioneers'
There are three syllables in the word "pioneers" (pi-o-neers).
Pioneers encountered many different things that had hurt them in nature and they are hail, rain, and lightening.
we are not sure
Vast amounts of territory became open and available to settlement, and many of the pioneers were children of pioneers themselves.