Correct option is D
The Eiffel Tower was built in 1889 to celebrate the 100th anniversary of the French Revolution. It was constructed for the 1889 Exposition Universelle, also known as the World's Fair.
· The Eiffel Tower was designed by Gustave Eiffel, a well-known bridge engineer.
· Construction began in 1887 and was completed in 1889.
· The Eiffel Tower was the tallest structure in the world for 41 years.
