Answer: The U.S. Government lent some diplomatic support, but Britain and France had territories in West Africa and were better poised to act. As a result, in 1847, Liberia declared independence from the American Colonization Society in order to establish a sovereign state and create its own laws governing commerce.
Explanation: Hope this helps :)
It was the "Notre Dame Cathedral" that Napoleon saved from demolition, since he knew the cultural and historical significance of the building, and how special it was to the fabric of France.