9h 35min, jan 27, 1898 y - Puerto Rico is ceded to the US
Description:
In 1898 after the Spanish American War, the colony of Puerto Rico was ceded to the US under the Treaty of Paris along with several other colonies.
Reference Articles:
New York Times
A look at Puerto Rico Before and After Hurricane Maria, 09.14.2018
Added to timeline:
Post Maria
Date: