The south states did not like Abraham Lincoln. Abraham acted against slavery and the southern states were mainly based on slavery. This is when the southern states started to break from the United States. This is how the southern states reacted to the election of Abraham Lincoln.
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Diseases introduced by white settlers.
The main reason for the wipe-out of Native Americans was the threat of the diseases introduced by White Europeans. This ended up killing many Native Americans across different tribes, as they had no immunity to these diseases and had never dealt with these kinds of illnesses before. This was a rampant problem and attained the Native Americans quickly after the European settlers arrived.
An ambassador is the President's highest-ranking representative to a specific nation or international organization abroad. ... A key role of an ambassador is to coordinate the activities not only of the Foreign Service Officers and staff serving under him, but also representatives of other U.S. agencies in the country.