Electronics
First introduced in 2007 by Steve Jobs, this iconic smartphone revolutionized the mobile industry.
iPhone
This Jamaican-American DJ is widely credited as the "Father of Hip-Hop" for pioneering the use of breakbeats at a Bronx house party in 1973.
DJ Kool Herc (Clive Campbell)
He was the first president of the United States, famously setting the two-term tradition, and his face appears on the dollar bill.
George Washington
On September 18, 1947, President Harry S. Truman signed the National Security Act, which officially established this newest branch of the U.S. military as an independent service.
U.S. Air Force
This is the name of the official currency for Japan
Yen
This small, removable card connects your phone to a specific carrier network.
SIM card (Subscriber Identity Module)
Released in 1979, this song by The Sugarhill Gang was the first hip-hop single to become a mainstream commercial hit and reach the top 40 on the Billboard Hot 100 chart.
Rapper's Delight
The 16th president, he led the nation through the Civil War and issued the Emancipation Proclamation.
Abraham Lincoln
Before becoming a separate branch, the U.S. Air Force was part of the U.S. Army, most notably under this name during World War II.
U.S. Army Air Forces (AAF)
This symbol, used for the U.S. dollar, is also used for the currencies of Australia, Canada, and Mexico
dollar sign ($)
First launched in 2010, this device from Apple created the new product category between a smartphone and a laptop.
iPad
This legendary DJ, an innovator of techniques like scratching and cutting, formed the influential group ____ and the Furious Five.
Grandmaster Flash (Joseph Saddler)
The only president to serve two non-consecutive terms in office, he is counted as both the 22nd and 24th president.
Grover Cleveland
This famous American test pilot was the first person to break the sound barrier in the rocket-powered Bell X-1 aircraft in 1947.
Chuck Yeager
This currency is used by 20 member states of a Union, including Germany, France, and Italy
Euro
This is the name for the sound-silencing technology originally developed for pilots to block out loud airplane engine sounds.
Active Noise Cancellation
This influential group from Queens, New York, was the first hip-hop act to achieve a gold record, a platinum record, have their music videos on MTV, and appear on the cover of Rolling Stone.
Run-D.M.C.
He was the only president not to have been elected as either Vice President or President; he assumed office after Richard Nixon's resignation.
Gerald Ford
In 1948, the new Air Force faced its first major challenge when it participated in this massive operation to supply West Berlin by air after the Soviets blockaded all ground routes.
Berlin Airlift (Operation Vittles)
Measured against the U.S. dollar, this oil-rich Middle Eastern nation's Dinar is consistently ranked as the strongest currency in the world by nominal value.
Kuwaiti Dinar
An executive at this company, Martin Cooper, made the first handheld cellular phone call in 1973.
What is Motorola
This artist made the song, "Not Like Us."
Kendrick Lamar
This president, who served from 1933 to 1945, was elected to four terms and led the country through the Great Depression and World War II.
Franklin D. Roosevelt
This long-serving strategic bomber aircraft, first introduced in the 1950s, is the oldest aircraft the Air Force still uses and is expected to remain in service until at least the 2050s.
B-52 Stratofortress
This currency, which uses the symbol "£", is one of the oldest in the world still in use today and is the official tender of the United Kingdom
British Pound Sterling (or Pound Sterling)