Yugoslavia established its existence in 1918 when the royal House of Karaorevi became the royal family that ruled over the country. The Yugoslavian military successfully defended the nation against multiple military challenges, which included the German invasion of 1941. The dissolution of the monarchy and the death of Josip Tito as the subsequent leader resulted in the disintegration of Yugoslavia into separate nations due to ethnic and religious conflicts.
West Florida
The Republic of West Florida formed after American forces seized control of a Baton Rouge fort from Spanish defenders in 1810. The Republic of West Florida existed as an independent state for less than one month before it chose to join the United States.
Vermont
Vermont took some radical and bold measures when it came to declaring independence back in 1777. After becoming independent from the British Empire, Vermont also drew up a constitution to declare its independence from the colony of New York. The United States accepted Vermont as its 14th state after Vermont conducted negotiations with Canada about rejoining the British Empire and the United States.
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Tibet
China has maintained a continuous historical connection with Tibet throughout its entire existence. Tibet existed as an independent nation from the 14th century until the 18th century before it became part of Chinese territory, which later returned to independence multiple times. The People’s Republic of China invaded Tibet in 1949 after Tibet declared itself an independent nation in 1913, which lasted until that time.
Texas
Texas achieved independence from Mexico during the 19th century to establish itself as the Republic of Texas. The United States officially recognized this event in 1836 together with the Texas-United States admission negotiations. Texas achieved statehood as the 28th United States state after lawmakers reached an agreement through discussions that resulted in major legal modifications.
Soviet Union
The Soviet Union held the title of the largest nation throughout world history because it occupied one-sixth of Earth's total land area while containing more than 100 ethnic groups throughout its territory. The Soviet Union joined the Allied Forces during World War II, but the relationship between the two powers began to deteriorate when both sides started competing to expand their military stockpiles and develop space capabilities. The Soviet Union dissolved its existence in 1991, which resulted in its transition to a historical entity.
South Vietnam
Vietnam established itself as a French colony, which later experienced Japanese Empire occupation. After enduring multiple challenges, the Vietnamese people succeeded in their battle against Japanese and French forces, but their victory caused extensive damage to their nation. The South Vietnamese government suffered from corruption, which ultimately resulted in the country becoming a communist state through forced reunification.
Kingdom of Sikkim
The Kingdom of Sikkim used to be a sovereign nation long before it became an Indian state. The Namgyal dynasty established the kingdom in 1642, which remained under their rule until 1890, when it became a British protectorate. The voters requested a referendum, which resulted in their statehood as India’s 22nd state despite the ongoing disputes between British and Indian forces.
Roman Empire
The Roman Empire, which was established in 27 B.C. and lasted until the Germanic tribe invasions in 476, controlled most European territories and northern African regions and western Asian territories for more than 500 years. The Roman Empire reached its height in power, but its vast territorial extent made it unmanageable, which resulted in its ultimate demise.
Prussia
Prussia originated in 1525 and was under the rule of the House of Hohenzollern. The military power of Prussia enabled the nation to expand its territory and gain complete control over European territories. Their military was so strong and feared that Napoleon himself was quoted saying, “Prussia was hatched from a cannonball. " The current territory of Poland includes most of the area that used to belong to Prussia.
Ottoman Empire
The Ottoman Empire existed as one of the most enduring empires throughout history because it began in 1299 and continued until the early 20th century. The empire began to grow immediately after its establishment and reached its maximum size during the 16th century. The Ottoman Empire experienced territorial and power decline because European strength developed through the Industrial Revolution.
Newfoundland
Today Newfoundland functions as a distinct territory within the Canadian province of Newfoundland and Labrador. Over the centuries, multiple cultures have arrived in Newfoundland, starting from the time when England established it as its first colony. Newfoundland achieved self-governance when it chose to enter Canadian Confederation together with Labrador as the 10th province.
Korea
North Korea and South Korea used to be one country, under the name Korea, until 1948. The country split into two parts when the Republic of Korea became established in the South and the Democratic People's Republic of Korea emerged in the North. The two countries started fighting because they both wanted to control the whole territory, which resulted in North Korea becoming more isolated from the world.
