Not sure but i am going to guess construction, farming, and medical
The Archeologists new the legacy of poverty point by the characteristics of artifacts and the nonlocal rocks used to make them. Remember the Poverty Point culture is an archeological picture of some Mississippi Valley people who lived around 1730 B.C.
I believe it was the crusades, which was attacking for the land known as "Jesus's birthplace", need anything, tag me :)
