Answer:
A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. The obligations often included military support by knights in exchange for certain privileges, usually including land held as a tenant or fief.
I know there have been events misnamed before most commonly through a bad translation or spelling mishap but 90% of the time the event will be correctly labeled. As for needed resources I would recommend googling it. You will find a couple things for sure.
Answer:
Kingdom of Spain, kingdom of France, republic of Mexico, republic of Texas, confederate States of America, and the USA.
Explanation:
Spain was the first to claim Texas. France claimed Louisiana, then wanted westward control. Mexico gained independence from Spain then tried to claim Texas. Texas joined the United States.