Misc: Victorian women tried to enlarge their breasts by bathing in _______?

Questions

Prior to 1998 who was the last non-American to win the U.S. Masters golf championship?

What is the more familiar name to the British of the Swiss lake Vierwaldstattersee?

What was the pre-war German name for the Baltic city which is now Russian and called Kaliningrad?

Which sportswear company is named after a Greek Goddess?

By what name is the 3rd battle of Ypres known?