<span>It failed because this ended up hurtingUS trade</span>
The correct answer is "protection".
In feudal society, a vassal was a person invested with a fief for which they had to povide services to a lord. First, a feudal contract was made, and under that contract, the lord was bound to provide the vassal with the fief, i.e. to provide protection and to do him justice in court. In return the Lord could demand the services which were attached to the fief, and these could include all kinds of services - military, administrative etc.
God had created a rational universe that could only be understood through reason.
Charlemagne<span> established a procedure by which canons of a cathedral would choose the bishop, and monks or nuns would choose their leaders.</span>
The rights of ALL people are listed in the Bill of Rights. I am unaware of an aspect of government that grants special rights to minorities.
***Illegal aliens have been allowed to remain in the US without deportation. This is NOT the norm.