music: In this song Billy Corgan's so depressed, things cant get any worse. Yawn?

Questions

In 1821 Santo Domingo (Dominican Rep) proclaims independence from---------- . ?

In 1822 Dom Pedro crowned emperor of---------- . ?

In 1887 Sino-Portuguese treaty recognizes Portugal's control of---------- . ?

In 1913 Continuous moving assembly line introduced by ---------- (1 car every 2.5 minutes). ?

In 1918 Iceland becomes independent state under the ---------- crown. ?