In a nutshell, the Crusades helped to end the Feudalism.
Explanation:
The Crusades were one role in the vast play we call the decline of feudalism. How did these military movements help? The Christian armies that were going to retake the Holy Land were making the economy work. They had to buy and sell goods, promoting a trade exchange that was crucial to the urban renaissance. Beyond this economic factor, the Crusades were responsible for a cultural exchange that was good for Europe. The contact with other cultures and points of view helped to open the continent to new ideas, turning the feudalism an outdated system.
They can be if the person is taking in too many calories. It is really the sodium and sugar that is the problem. A family history of hypertension also contributes to increase incidence.
