What cause would these “knights” be most likely to crusade?

social reform

Explanation:

The fight that involved journalists would most likely be related to social issues that the society face at that current time. Honest journalists would always try to expose the truth of wrongdoins that made by both government and private sectors and fight for the improvement of people's well being.

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.

not sure might be he acquired the entire oregon territory from great britain