United States have over 500 million people living
I’m not sure about all, so I’m going to answer the ones that I’m sure.
El río Mississippi
El Golfo de México
Between the icy pole and streamy tropics
I think the correct answers from the choices listed above are options 1 and 4. The Middle Latitudes have only two seasons and abundant rainfall in some places, less in other areas. Hope this answers the question. Have a nice day. Feel free to ask more questions.
Two ways in which the proximity to water has affected Western Europe's economy:
1) Proximity of water can lead to lack of food, which affects economy of the country in various ways.
2) It has wet cool summers and wet, mild winters, so for shelters and cloths, it affects economy by transportation, extra manufacture etc.
Hope this helps!