General Knowledge
Guess the Decade Quiz
Events, inventions, and pop culture moments — can you place them in the right decade?
Events, inventions, and pop culture moments — can you place them in the right decade?
The hula hoop craze of 1958 saw 25 million units sold in just 4 months — one of history's greatest consumer product fads. From the Wright Brothers' first flight in 1903 to ChatGPT's launch in 2022, history moves in surprising rhythms. This quiz challenges you to match major events, inventions, and cultural milestones to their correct decade across 120+ years of human history.
Each question names an event, invention, or cultural moment and asks which decade it occurred. Choose from four decade options. You'll get instant feedback explaining when and why it happened, building a comprehensive timeline of 20th and 21st century history.
You'll build a mental timeline of modern history — from the transistor (1940s) to Dolly the sheep (1990s), from the first email (1970s) to Instagram (2010s). Did you know the World Wide Web was made public in 1991? Many people think it's much older — or much newer.
The first email was sent in 1971 by Ray Tomlinson, a computer engineer at BBN Technologies. He chose the @ symbol to separate the user name from the host computer name — a convention that has persisted for over 50 years. The first message was reportedly a test string of characters like "QWERTYUIOP." The email was sent between two machines sitting next to each other in the same room.
The 1940s produced an extraordinary cluster of transformative inventions: the transistor (1947), the first programmable computers (ENIAC, 1945), nuclear fission weapons (1945), radar, jet engines, and the microwave oven. Many historians argue the 1940s laid the technological foundation for everything that followed in the 20th century. The 1990s (internet, WWW, genome project, mobile phones) and 2000s (smartphones, social media) are also strong contenders.
Tim Berners-Lee invented the World Wide Web in 1989 while working at CERN in Switzerland. The first website went live on August 6, 1991, and the web was made publicly available in 1991. CERN made the underlying web protocols royalty-free in 1993, which enabled its explosive growth. The internet itself (as ARPANET) predates the web — it was created in 1969.
Last updated: March 2026