List the Texans that played an important role in World War II *

Colonel Edward M. House, who was an important adviser to President Wilson. Albert Sidney Burleson was postmaster general during the time period, and Thomas Watt Gregory was the United States Attorney General during the war.

Explanation:

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.

food chain i would say only because there is competition on getting food and survival