Cuba , officially the Republic of Cuba , is a country comprising the island of Cuba as well as Isla de la Juventud and several minor archipelagos. Cuba is located in the northern Caribbean where the Caribbean Sea, Gulf of Mexico and Atlantic Ocean meet. It is east of the Yucatán Peninsula (Mexico), south of both the U.S. state of Florida and the Bahamas, west of Haiti and north of both Jamaica and the Cayman Islands. Havana is the largest city and capital; other major cities include Santiago de Cuba and Camagüey. The area of the Republic of Cuba is (without the territorial waters). The island of Cuba is the largest island in Cuba and in the Caribbean, with an area of and the second-most populous after Hispaniola, with over 11 million inhabitants. The territory that is now Cuba was inhabited by the Ciboney Taíno people from the 4th millennium BC until Spanish colonization in the 15th century. From the 15th century, it was a colony of Spain until the Spanish–American War of 1898, when Cuba was occupied by the United States and gained nominal independence as a de facto United States protectorate in 1902. As a fragile republic, in 1940 Cuba attempted to strengthen its democratic system, but mounting political radicalization and social strife culminated in a coup and subsequent dictatorship under Fulgencio Batista in 1952. Open corruption and oppression under Batista's rule led to his ousting in January 1959 by the 26th of July Movement, which afterwards established communist rule under the leadership of Fidel Castro. Since 1965, the state has been governed by the Communist Party of Cuba. The country was a point of contention during the Cold War between the Soviet Union and the United States, and a nuclear war nearly broke out during the Cuban Missile Crisis of 1962. Cuba is one of a few extant Marxist–Leninist socialist states, where the role of the vanguard Communist Party is enshrined in the Constitution. Independent observers have accused the Cuban government of numerous human rights abuses, including short-term arbitrary imprisonment. Under Castro, Cuba was involved in a broad range of military and humanitarian activities in Guinea-Bissau, Syria, Angola, Algeria, South Yemen, North Vietnam, Laos, Zaire, Iraq, Libya, Zanzibar, Ghana, Equatorial Guinea, Eritrea, Somalia, Ethiopia, Congo-Brazzaville, Sierra Leone, Cape Verde, Nigeria, Benin, Cameroon, Zimbabwe and Mozambique. Cuba sent more than 400,000 of its citizens to fight in Angola (1975–91) and defeated South Africa's armed forces in conventional warfare involving tanks, planes, and artillery. Cuban intervention in Angola contributed to the downfall of the apartheid regime in South Africa. Culturally, Cuba is considered part of Latin America. It is a multiethnic country whose people, culture and customs derive from diverse origins, including the aboriginal Taíno and Ciboney peoples, the long period of Spanish colonialism, the introduction of African slaves and a close relationship with the Soviet Union in the Cold War. The majority of the population of Cuba is 51% mulatto (mixed-race Spanish/African), 37% white, 11% black and 1% Chinese. Cuba is a sovereign state and a founding member of the United Nations, the G77, the Non-Aligned Movement, the African, Caribbean and Pacific Group of States, ALBA and Organization of American States. It has currently one of the world's only planned economies, and its economy is dominated by the tourism industry and the exports of skilled labor, sugar, tobacco, and coffee. According to the Human Development Index, Cuba has high human development and is ranked the eighth highest in North America, though 72nd in the world in 2019. It also ranks highly in some metrics of national performance, including health care and education. It is the only country in the world to meet the conditions of sustainable development put forth by the WWF.

China , officially the People's Republic of China (PRC; ), is a country in East Asia. It is the world's most populous country, with a population of around billion in 2017. Covering approximately 9.6 million square kilometres (3.7 million mi2), it is the world's third or fourth largest country by area. Governed by the Communist Party of China, the state exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and the special administrative regions of Hong Kong and Macau. China emerged as one of the world's first civilizations, in the fertile basin of the Yellow River in the North China Plain. For millennia, China's political system was based on hereditary monarchies, or dynasties, beginning with the semi-mythical Xia dynasty in 21st century BCE. Since then, China has expanded, fractured, and re-unified numerous times. In the 3rd century BCE, the Qin reunited core China and established the first Chinese empire. The succeeding Han dynasty, which ruled from 206 BCE until 220 CE, saw some of the most advanced technology at that time, including papermaking and the compass, along with agricultural and medical improvements. The invention of gunpowder and movable type in the Tang dynasty (618–907) and Northern Song (960–1127) completed the Four Great Inventions. Tang culture spread widely in Asia, as the new Silk Route brought traders to as far as Mesopotamia and the Horn of Africa. Dynastic rule ended in 1912 with the Xinhai Revolution, when the Republic of China (ROC) replaced the Qing dynasty. China, as a whole, was ravaged by feudal warlordism and Japan during World War II. The subsequent Chinese Civil War resulted in a division of territory in 1949 when the Communist Party of China led by Mao Zedong established the People's Republic of China on mainland China while the Kuomintang-led nationalist government retreated to the island of Taiwan where it governed until 1996 when Taiwan transitioned to democracy. The political status of Taiwan remains disputed to this day. China is a unitary one-party socialist republic and is one of the few existing socialist states. Political dissidents and human rights groups have denounced and criticized the Chinese government for widespread human rights abuses, including suppression of religious and ethnic minorities, censorship and mass surveillance, and cracking down on protests such as in 1989. The Chinese government says that the right to subsistence and economic development is a prerequisite to other types of human rights and that the notion of human rights should take into account a country's present economic level. Since the introduction of economic reforms in 1978, China's economy has been one of the world's fastest-growing with annual growth rates consistently above 6 percent. According to the World Bank, China's GDP grew from $150 billion in 1978 to $12.24 trillion by 2017. According to official data, China's GDP in 2018 was 90 trillion Yuan ($13.5 trillion). Since 2010, China has been the world's second-largest economy by nominal GDP, and since 2014, the largest economy in the world by PPP. China is also the world's largest exporter and second-largest importer of goods. China is a recognized nuclear weapons state and has the world's largest standing army, the People's Liberation Army, and the second-largest defense budget. The PRC is a permanent member of the United Nations Security Council as it replaced the ROC in 1971, as well as an active global partner of ASEAN Plus mechanism. China has been characterized as a emerging superpower, mainly because of its massive population, large and rapidly-growing economy, and powerful military.