Burundi, Jamaica, Rwanda and Trinidad and Tobago are admitted to the United Nations.

Jamaica ( (listen); Jamaican Patois: Jumieka) is an island country situated in the Caribbean Sea. Spanning 10,990 square kilometres (4,240 sq mi) in area, it is the third-largest island of the Greater Antilles and the Caribbean (after Cuba and Hispaniola). Jamaica lies about 145 kilometres (90 mi) south of Cuba, and 191 kilometres (119 mi) west of Hispaniola (the island containing the countries of Haiti and the Dominican Republic); the British Overseas Territory of the Cayman Islands lies some 215 kilometres (134 mi) to the north-west.Originally inhabited by the indigenous Tano peoples, the island came under Spanish rule following the arrival of Christopher Columbus in 1494. Many of the indigenous people either were killed or died of diseases, after which the Spanish brought large numbers of African slaves to Jamaica as labourers. Named Santiago by the Spanish, the island remained a possession of Spain until 1655, when England (later Great Britain) conquered it, renaming it Jamaica. Under British colonial rule Jamaica became a leading sugar exporter, with a plantation economy dependent on the African slaves and later their descendants. The British fully emancipated all slaves in 1838, and many freedmen chose to have subsistence farms rather than to work on plantations. Beginning in the 1840s, the British began using Chinese and Indian indentured labour to work on plantations. The island achieved independence from the United Kingdom on 6 August 1962.With 2.8 million people, Jamaica is the third-most populous Anglophone country in the Americas (after the United States and Canada), and the fourth-most populous country in the Caribbean. Kingston is the country's capital and largest city. The majority of Jamaicans are of Sub-Saharan African ancestry, with significant European, East Asian (primarily Chinese), Indian, Lebanese, and mixed-race minorities. Due to a high rate of emigration for work since the 1960s, there is a large Jamaican diaspora, particularly in Canada, the United Kingdom, and the United States. The country has a global influence that belies its small size; it was the birthplace of the Rastafari religion, reggae music (and associated genres such as dub, ska and dancehall), and it is internationally prominent in sports, most notably cricket, sprinting and athletics. Jamaica is often considered the world's least populous cultural superpower.Jamaica is an upper-middle income country with an economy heavily dependent on tourism; it has an average of 4.3 million tourists a year. Jamaica performs favourably in measurements of press freedom and democratic governance. It ranked first in the Caribbean on the World Happiness Report for 2021. However, it ranks poorly for civil rights of LGBT persons, ranking last in the Western Hemisphere. Politically it is a Commonwealth realm, with King Charles III as King of Jamaica. His appointed representative in the country is the Governor-General of Jamaica, an office held by Patrick Allen since 2009. Andrew Holness has served as Prime Minister of Jamaica since March 2016. Jamaica is a parliamentary constitutional monarchy with legislative power vested in the bicameral Parliament of Jamaica, consisting of an appointed Senate and a directly elected House of Representatives.

Burundi ( (listen), ), officially the Republic of Burundi (Kirundi: Repubulika y’Uburundi, [u.βu.ɾǔː.ndi]; Swahili: Jamuhuri ya Burundi; French: République du Burundi, [buʁundi] or [byʁyndi]), is a landlocked country in the Great Rift Valley where the African Great Lakes region and East Africa converge. It is bordered by Rwanda to the north, Tanzania to the east and southeast, and the Democratic Republic of the Congo to the west; Lake Tanganyika lies along its southwestern border. The capital cities are Gitega and Bujumbura, the latter of which is the country's largest city.The Twa, Hutu and Tutsi peoples have lived in Burundi for at least 500 years. For more than 200 of those years, Burundi was an independent kingdom, until the beginning of the 20th century, when Germany ruled the region. After the First World War and Germany's defeat, the League of Nations "mandated" the territory to Belgium. After the Second World War, this transformed into a United Nations Trust Territory. Both Germans and Belgians ruled Burundi and Rwanda as a European colony known as Ruanda-Urundi. Burundi and Rwanda had never been under common rule until the time of European invasion of Africa.Burundi gained independence in 1962 and initially had a monarchy, but a series of assassinations, coups and a general climate of regional instability culminated in the establishment of a republic and a one-party state in 1966. Bouts of ethnic cleansing and ultimately two civil wars and genocides during the 1970s and again in the 1990s resulted in hundreds of thousands of deaths, leaving the economy undeveloped and the population as one of the world's poorest. The year 2015 witnessed large-scale political strife as President Pierre Nkurunziza opted to run for a third term in office, a coup attempt failed and the country's parliamentary and presidential elections were broadly criticised by members of the international community.

The sovereign state of Burundi's political system is that of a presidential representative democratic republic based upon a multi-party state. The President of Burundi is the head of state and head of government. There are currently 21 registered parties in Burundi. On 13 March 1992, Tutsi coup leader Pierre Buyoya established a constitution, which provided for a multi-party political process and reflected multi-party competition. Six years later, on 6 June 1998, the constitution was changed, broadening the National Assembly's seats and making provisions for two vice-presidents. Because of the Arusha Accord, Burundi enacted a transitional government in 2000. In October 2016, Burundi informed the UN of its intention to withdraw from the International Criminal Court.Burundi remains primarily a rural society, with just 13.4% of the population living in urban areas in 2019. The population density of around 315 people per square kilometre (753 per sq mi) is the second highest in Sub-Saharan Africa. Roughly 85% of the population are of Hutu ethnic origin, 15% are Tutsi, and fewer than 1% are indigenous Twa. The official languages of Burundi are Kirundi, French, and English, Kirundi being recognised officially as the sole national language.One of the smallest countries in Africa, Burundi's land is used mostly for subsistence agriculture and grazing, which has led to deforestation, soil erosion and habitat loss. As of 2005, the country was almost completely deforested, with less than 6% of its land covered by trees and over half of that being commercial plantations. In addition to poverty, Burundi often suffers from corruption, weak infrastructure, poor access to health and education services, and hunger. Burundi is densely populated, and many young people emigrate in search of opportunities elsewhere. The World Happiness Report 2018 ranked the country as the world's least happy with a rank of 156. Burundi is a member of the African Union, Common Market for Eastern and Southern Africa, United Nations and the Non-Aligned Movement. Burundi has the lowest GDP per capita As of 2022.