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In order to obtain the Katana chest permutation on Halo Crusades, you must find all four Legendary Cards and turn them in at Luke's House.
Four Crusades, with other negligible crusades.
The first four crusades were the most important. After that they mainly lost purpose.
The crusades were the result of the Pope wanting to get back the holy land with Jerusalem and its surrounding biblically historic cities. There were nine of them and the first four are considered to be the most important.
the four armies were fighting in the first crusades
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i think that the highest civilization discussed was the civilization with the Aztecs
GradPoint - each subject is discussed in turn
article four section two
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To answer this question in the most simplest form you must look at the aim of the crusades; although there were many secondary aims for the crusades the main reason from the first four crusades to embark was to capture Jerusalm, which had been help by the Muslims since 638AD. So taking this into respect the first crusade must have been the most successful because it was the only one out of the first four crusades to capture Jerusalm!
As discussed, the four most important influences of Western art history are: