Well, The Mongols were really mean and conquered areas easily since everyone was affraid of them. Genghis Khan the leader of the Mongols and the Mongols themselves would come in and invade an area, killing anyone who disagreed. Eventually like most armies they weaked over time. I believe it was a guy named (Firstnameidkit) Kublai who took control over the Mognols last, with his death the Mongol Empire just kind of fell apart.
The question arose for federal nations whether the tidelands for formerly independent coastal states had been ceded to the federal union on admission, or retained. The admission of the former Republic of Texas as a state in the United States in 1845 stipulated that its tidelands remained the territory of Texas. I hope this helps :)
Answer:
That these united Colonies are, and of Right ought to be Free and Independent States, that they are Absolved from all Allegiance to the British Crown, and that all political connection between them and the State of Great Britain, is and ought to be totally dissolved; and that as Free and Independent States.
Explanation: