After many loses against North Korean, in 1950 the Republic of Korea (ROK), the United States and the United Kingdom forces set up a defense line on the Pusan Perimeter near the city of Pusan. After six weeks of conflict and continuous battles, the North Korean army had to retreat because of a shortage of its supplies. On the other hand, the U.N. and American forces used the Pusan port as a way to get supplies which was the key factor that led to their victory.
It's possible but extremely unlikely to Revive an extinct animal but It is possible to create an organism similar to whatever extinct animal that is in question using its dna or the dna of its relatives. If scientists did revive extinct populations it could have an extremely detrimental effect on humans and our environment.
