On February the 15th, in 1898, The battleship Maine was sunk by the Spanish crown, in Havana Harbor. This was the reason why the United States declared war on Spain in May of the same year.
When the war ended, in December of 1898, Spain had lost all its control over the territories of Puerto Rico, Cuba, The Philippines Islands, and Guam, with some smaller islands as well.
The War ended with the ratification of the Treaty of Paris, that was signed on December 10th, 1898.
Abolitionists
The abolitionist movement was an organized effort to end the practice of slavery in the United States. The first leaders of the campaign, which took place from about 1830 to 1870, mimicked some of the same tactics British abolitionists had used to end slavery in Great Britain in the 1830s
Uh Idk but I do know you not in high school because I have the same question in I'm in 8th grade