Answer:
he vassal promises to be loyal to his lord.
Explanation:
The Monroe Doctrine was written by James Monroe, former president of the United States. He wrote the Monroe Doctrine after Latin America fought for their independence. Its main purpose was to rid the Americas of European influence and warn the Europeans if they ever tried to reestablish colonization.
The assassination of Austrian archduke,Franz Ferdinand caused WW1 because it triggered the alliance system and conflict between countries rose.
<span>I'm pretty sure its the Kings and slaves.</span><span />