Misc: In 1658 Lord Oliver ---------- British king (1653-58), dies at 59?

Questions

What's white sugar mixed with to make brown sugar?

Where did over 300 defiant Indians head off to, after Sitting Bull was killed?

Where would you experience serious pain if someone dropped a concrete block on your hallus?

"A horse! A horse! My kingdome for a horse!"?

Which two bodies of water separate Britain from mainland Europe?