Short answers, pulled from the story.
The IMF formally came into existence on the 27th of December 1945 when twenty-nine countries ratified its Articles of Agreement. The organization began its financial operations by the 1st of March 1947.
Fred M. Vinson decided that the International Monetary Fund would be headquartered in Washington, D.C. This decision overruled US Treasury Secretary Henry Morgenthau Jr.'s initial preference for New York to avoid subjecting the institution to the taint of international finance.
Kristalina Georgieva became the current managing director of the International Monetary Fund on the 1st of October 2019. She is a Bulgarian economist who has held the position since that date following the removal of the age limit for the role in August 2019.
This arrangement collapsed in August 1971 when the United States government suspended the convertibility of the dollar into gold. The collapse forced the IMF to shift its focus from currency stabilization to managing balance-of-payments difficulties and promoting market-liberalizing reforms.
Greece, Portugal, Ireland, Romania, and Ukraine became the largest borrowers from the International Monetary Fund. In May 2010 the fund participated in the first Greek bailout totaling eleven hundred billion euros to address public debt accumulation.