Answer:
I'd say the Great Wall of china
Explanation:
built over 2300 years ago, it's over 20,000 miles long!
The Treaty of Paris signed on December 19, 1898 officially ended the war. This treaty also granted the United States control of places like Guam, the Philippine Islands, and Puerto Rico.
William Wilberforce continued to work for the abolition of all slavery within the British Colonies. He joined the 'Society for Gradual Abolition' and, when the campaign intensified again in the 1820's and 30', he did as much as his failing health would allow.