Built in the 18th century, the Spanish Steps are a monumental stairway of 135 steps located in this European city.
The stairs were so named because they descend to the Piazza di Spagna, the site of the Spanish embassy to the Vatican since 1647.
What prolific author of adventure and science fiction novels created the character of Tarzan?
Burroughs wrote 24 novels about the adventures of Tarzan. He also wrote eleven books about John Carter, a Civil War vet who was transported to Mars.
In 1972, the brand name Esso was changed in the U.S. to what other name that also begins with an "E"?
Esso is still used internationally. The change from Esso to Exxon in the U.S. occurred in 1972 to avoid legal restrictions from the 1911 Standard Oil breakup.
The Sasanian Empire was primarily centered in this modern day nation.
The empire was founded and ruled by the House of Sasan from 224 to 651 AD. After a devastating war with the Byzantine Empire, it would eventually be conquered by the Rashidun Caliphate.
Malic acid was first isolated from the juice of this fruit by Carl Wilhelm Scheele in 1785.
Malic acid comprises 80–90% of the total acid content of apple juice and imparts a crisp, sharp taste. The word 'malic' is derived from Latin mālum, meaning 'apple'.
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