In 1999

1999 was the final year of the 20th century. It was a common year beginning on Friday of the Gregorian calendar. It is often associated with anxieties and predictions related to the "Y2K" bug, a potential computer glitch caused by software programmed to represent years with only two digits. While preparations were extensive, the bug ultimately had minimal global impact.

Significant events in 1999 included:

• Introduction of the Euro: The euro was introduced as a currency on January 1, 1999, in non-physical form (bank transfers, electronic payments, etc.) in eleven European Union member states. Physical euro coins and banknotes would not be introduced until 2002.

• Columbine High School Massacre: A school shooting at Columbine High School in Littleton, Colorado, on April 20, 1999, resulted in the deaths of 13 people and injuries to more than 20 others, raising national concerns about school safety, gun control, and youth violence.

• Kosovo War: NATO forces conducted a bombing campaign against Yugoslavia (Operation Allied Force) in response to the humanitarian crisis and ethnic cleansing occurring in Kosovo. The conflict ultimately led to the withdrawal of Yugoslav forces from Kosovo and the establishment of a United Nations administration.

• Presidential Impeachment Trial of Bill Clinton: The impeachment trial of U.S. President Bill Clinton continued in the Senate, ultimately resulting in his acquittal on February 12, 1999.

• Boxer Rebellion (Initial Stages): Anti-foreign sentiment grew in China, contributing to the rise of the Boxer Rebellion, which would escalate in 1900.

• Population Milestones: The world population reached approximately 6 billion people during 1999.