MCMXC is the Roman numeral representation for the year 1990. In this system, "M" stands for 1000, "CM" represents 900 (1000 - 100), and "XC" signifies 90 (100 - 10). Therefore, when combined, these symbols indicate the year 1990 in the Gregorian calendar. The year 1990 was significant in various global contexts. It marked the reunification of Germany after the fall of the Berlin Wall in 1989, symbolizing the end of the Cold War. Additionally, it was the year when Nelson Mandela was released from prison, paving the way for the end of apartheid in South Africa.