Answer: Social
Explanation: I just got it right on my world history work
Answer: The purpose of the footnote to paragraph 4 is that It provides an additional fact related to the Civil War.
The answer that fits the blank provided above is PACIFIC OCEAN. It is around the Pacific ocean that the tsunami warning system provides protection along its coastal areas. This tsunami warning system is found in the Ford Island and initiates warnings to those areas along the said ocean.
Answer: the Soviet stance on human rights and its invasion of Afghanistan in 1979 created new tensions between the two countries
Explanation: