President Carter's attempts to free the hostages were done in good faith and effort, but were hampered by failures in communication, delivery and execution. The plan involved servicemen who were not as well-trained as they could have been and certain weather effects like the "haboob" which was a big dust cloud, doomed the mission. Carter does deserve credit for taking responsibility for the failure however.
Actually, the civil war make their relationship became much worse.
Because of the civil war, the ally has to lose a lot of resources for war supplies and equipment. This led to a situation where the allies no longer able to pay the treaties that they promisd to pay to the Sioux, which eventually ended up in conflict between the two group.
It helps give it added stability, using the coiling technique it is impossible thicker or taller vessels.
