I think that it is B wave patterns good luck!!!!
The group that later took control of the Holy Land, attacked pilgrims, and led Pope urban to call for the crusades was the Seljuk Turks. The correct answer is C.
Answer:
Agriculture allowed people to stay in one place, and increased food production caused the population density to expand far beyond levels that could be sustained by hunting and gathering alone. This growth in population density provided a critical mass of people to sustain and spread contagious infectious diseases.
Our planet, Earth appears blue due to the mass amounts of water and lacks on its surface.
