That would be nationalism in the Balkans. Prior to WWI, Austria-Hungary had annexed Bosnia and Herzegovina, angering many in the Balkans especially those who wished to see a unified Yugoslavia. One such group was the Young Bosnia revolutionary organization, whose membership included Gavrilo Princip, the man who assassinated Archduke Franz Ferdinand in 1914, thus starting WWI.
Answer:
Relations between Cuba and the United States of America had already begun before Cuba began its actions to gain independence from Spain. There were several plans in the United States to buy Cuba from the Spanish Empire. When Spanish influence in the Caribbean waned, the United States, on the other hand, gained it in economics and politics, as well as in Cuban affairs.
Following the 1959 Cuban Revolution, relations between the two nations deteriorated and have been marked by tension ever since. From 1961 the United States and Cuba had no formal diplomatic relations and the United States maintained an embargo against Cuba, which made it illegal for U.S. companies to do business in Cuba. Diplomatic representation in this situation was maintained by the United States Interests Section in Havana, and there was a similar Cuban body in Washington D.C; both were officially part of their respective embassies in Switzerland. The United States launched an embargo on nationalizing the ownership of US companies in Cuba during the Revolution, and stated that they would continue for as long as the Cuban government refuses to pursue democratization and does not respect human rights in Cuba, meanwhile various organizations, including the UN General Assembly, almost unanimously called for an end to the U.S. embargo on Cuba.
A nationwide technological advancement that moves most of the population to an urban setting and/or integrates technology into its everyday lifestyle.
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Battle of Yorktown its the answer :D
Answer;
-Bering Strait
Explanation;
-The Bering Strait is a waterway that separates Russia from North America. It lies above the Bering Land Bridge (BLB), also called Beringia a submerged landmass that once connected the Siberian mainland with North America.
-To the north the Bering Sea connects with the Arctic Ocean through the Bering Strait, at the narrowest point of which the two continents are about 53 miles (85 kilometres) apart. The boundary between the United States and Russia passes through the sea and the strait.