music: 70's Chart Toppers: Name The Artist: I've Lost You?

Questions

In 1903 John Ringling---------- , circus director born?

In 1903 John Ringling North, ---------- director born?

In 1912 ---------- US marines invade Nicaragua; US remains until 1925. ?

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

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