Which internet company began life as an online bookstore called 'Cadabra'?
Explanation
The answer is Amazon, as it began its journey in 1994 as an online bookstore under the name "Cadabra." However, the name was later changed to Amazon to avoid any confusion with the term "cadaver." Since then, Amazon has evolved and expanded its offerings to become the world's largest online marketplace and one of the most influential technology companies globally, offering a wide range of products and services beyond books.