Misc: What do people in cold climates add to the water in a car's radiator in winter?

Questions

In 1912 2,500 US marines invade---------- ; US remains until 1925. ?

In 1917 ---------- declares war on Germany and Austria at start of WW I. ?

In 1917 China declares war on ---------- and Austria at start of WW I. ?

In 1917 China declares war on Germany and ---------- at start of WW I. ?

In 1941 Franklin D. ---------- and Winston S. Churchill signed the Atlantic Charter. ?