How Well Do You Know The 80s?

Explanation
The 80s can be described as the "Decade of the Gregorian calendar" because it refers to the period from 1980 to 1989, which is a decade according to the Gregorian calendar. The Gregorian calendar is the most widely used calendar system in the world, introduced by Pope Gregory XIII in 1582. It replaced the Julian calendar and is still in use today. Therefore, referring to the 80s as the "Decade of the Gregorian calendar" is an accurate description of the time period.

Explanation
The range of years in the 80s refers to the period from 1980 to 1989. This is because the 80s decade starts in 1980 and ends in 1989, encompassing a total of 10 years.

Explanation
The 80s refers to the 1980s, which falls within the second millennium. The second millennium spans from the years 1001 to 2000. Therefore, the correct answer is the Second Millennium.

Explanation
The 80s refers to the decade of the 1980s, which falls within the 20th century. The 20th century spanned from 1901 to 2000, so the 80s would naturally be a part of that time period.

Explanation
The fall of the Berlin Wall in 1989 was indeed a significant event of the 80s. It marked the end of the Cold War and symbolized the reunification of East and West Germany. The wall had been a physical and ideological barrier between the communist East and the democratic West, and its fall represented a victory for freedom and democracy. The event had a profound impact on global politics and is often seen as the beginning of the end of the Soviet Union and the Eastern Bloc.

Explanation
The IBM personal computer was released in 1981.

Explanation
The statement is false because Ukraine and much of the world is not filled with radioactive debris from the 1986 Chernobyl disaster. While the disaster did release a significant amount of radioactive material into the environment, it did not result in widespread contamination of Ukraine or the rest of the world. The immediate area around the Chernobyl power plant remains highly contaminated, but efforts have been made to contain and clean up the site. Additionally, measures have been taken to monitor and mitigate the spread of radioactive materials beyond the affected area.

Explanation
The first Space Shuttle, Columbia, lifted off in 1981.

Explanation
The statement "Global warming became well known to the scientific and political community in the 80s" is a fact that can be confirmed. The term "well known" implies that it gained significant attention and recognition during that time period. The scientific and political community started to acknowledge and discuss the issue of global warming in the 1980s, which led to further research, discussions, and actions to address this environmental concern.

Explanation
In 1986, nationalism made a comeback in the Eastern Bloc. This suggests that during this year, there was a resurgence of nationalistic sentiments and movements in the countries that comprised the Eastern Bloc. This could have been a response to political and social changes happening at the time, such as the reforms introduced by Soviet leader Mikhail Gorbachev and the growing discontent with Soviet influence. The resurgence of nationalism in the Eastern Bloc during 1986 reflects a shift in the political landscape and the aspirations of the people in this region.