The correct answer is that after the end of the Spanish-American War, the United States leased Guantanamo Bay from Cuba.
The Naval Base in Guantánamo Bay was established in 1898, when the United States militarily occupied the island after defeating Spain in the Spanish-American War. The government of the United States obtained a perpetual lease that began on February 23, 1903, with the signature by Tomás Estrada Palma, first president of the Republic of Cuba, of the Cuban-American Treaty.
With the passage of the Fugitive Slave Act of 1850, assisting or helping hide fugitive slaves became a federal offense, making all Underground Railroad activity subject to six months in prison and a $1,000 fine. Escaping from slavery or helping someone to escape from slavery was a very difficult and dangerous task.
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Austria-Hungary had invaded and crossed over into, Serbia and Russia was in an alliance with Serbia, so they felt as though they had to help out. Hope this helps.
