Misc: The America's Cup left home for the first time to go where?

Questions

what was "wampum" for north american indians?

which part of the body does a piece of armour called the greave protect?

when was the single european currency the euro introduced?

what five letter word means someone who falsly claims to have medical skill and knowledge?

leo baekeland created the first synthetic plastic in 1909 what did he call it?