<span>The Adams–Onís Treaty of 1819, also known as the Transcontinental Treaty, the Florida Purchase Treaty, or theFlorida Treaty, was a treaty between the United States and Spainin 1819 that ceded Florida to the U.S. and defined the boundary between the U.S. and New Spain.</span>
It protected the United States from competitors located in foreign countries.
The covenant : The royal covenant was made with David (2 Sam 7). It promised to establish his dynasty forever while acknowledging that its original royal-covenant promises had been given to the ancestor of the whole nation, Abraham.
The significance:
Covenant, a binding promise of far-reaching importance in the relations between individuals, groups, and nations.
lil extra:
it has social, legal, religious, and other aspects. This discussion is concerned primarily with the term in its special religious sense and especially with its role in Judaism and Christianity.
The Japanese justified their imperialism in multiple different ways, depending on what territory is in question.
For China, there was a fake attack on Japanese property, performed by the Japanese themselves, so they invaded Manchuria with the justification that their citizens were in danger.
Korea and Taiwan were justified in the sense that some countries had colonies which they used for resources and as market for their products, so the Japanese justified it in the manner that they also deserve to have such territories.
For some territories they conquered there was no real justification though, and the Japanese didn't really bothered with making excuses anymore.
There were a number of reasons that the Roman Empire fell. By the 5th century A.D., the Romans experienced repeated invasions by Germanic tribes who were constantly encroaching on its borders. Internally, the empire suffered from overspending and unfair taxation. Their was also an increasing gulf between the rich and poor. The Romans depended on slaves and the supply significantly declined. These problems were compounded by the rise of the Eastern Roman Empire in Byzantium. At first, it allowed the empire to be administered more efficiently but the two eventually drifted apart due to differences in religious expression and ideology. The two sections also failed to work together to stop outside encroachment. Governmental corruption and instability caused a number of problems as well. The rise of Christianity and the weakening of the military structure has also been viewed as one of the reasons why the Roman Empire fell.