Answer:
Per capita income
Explanation:
Per capita income divides the national income by population size. This is used to measure a country's quality of life and standard of living.
The Us performs a study of the per capita income every 10 years by the United States Census Bureau and was last conducted in 2018.
The Panama Canal because it makes the most money and is the most important out of all the four.
if the warm air from the gulf is moist then it will make a hurrincane. But typically when warm air meets cold air it makes a tornado.