The answer is Letter C. Iron curtain is the political separation of Western and Eastern Europe. It started from the end of World War II in 1945 until the last part of Cold War in 1991. Countries who are members of the Warsaw pact are located at the east side of the Iron Curtain while NATO members are on the west side.
A, 20.
The vigesimal numbering system, or base-20 numeral system, is based on the number twenty. Twenty individual numerals/digits are used, ten more than in the usual decimal system.
C. That region borders the Indian Ocean to the right and is home to the Mountain range that includes mount Kilimanjaro
Johnny Cash is often considered the most important voice of the Country music genre, and one of the most famous performers in the history of music. He has an illustrious career, receiving 11 Grammy Awards, and being the winner of multiple awards, among the most important ones: Kennedy Center Honors, the National Medal of the Arts, and the Grammy Lifetime Achievement Award. Johnny Cash has also being inducted to the Country Music Hall of Fame, the Rock and Roll Hall of Fame, and the Songwriters' Hall of Fame. For all these reasons, Johnny Cash has made an impact on today's music.
