Misc: What is a war between parties of the same country?

Questions

In 1910 Mark Twain [Samuel Langhorne Clemens], author, dies in ---------- Conn.?

In 1926 Elizabeth Alexandra Mary ---------- II, queen of England (1952- ), born.?

In 1947 ---------- Pop [James Osterberg], Mich, rocker (Lust For Life, Search and Destroy), born.?

In 1951 Paul ---------- rocker (Squeeze/Ace-How Long), born.?

In 1958 Andie ---------- Gaffney SC, actress (Greystroke, Green Card), born.?