Dame Mary Eugenia Charles, DBE (15 May 1919 – 6 September 2005) was Prime Minister of Dominica from 21 July 1980 until 14 June 1995. She was Dominica's first, and to date only, female prime minister, as well as the nation's longest serving prime minister. She was the second female prime minister in the Caribbean after Lucinda da Costa of the Netherlands Antilles, and the first woman elected in her own right as head of government in the Americas. She was the world's third longest-serving female Prime Minister, behind Indira Gandhi of India and Sirimavo Bandaranaike of Sri Lanka, and the world's longest continuously serving female Prime Minister ever.

Charles was born in the fishing village of Pointe Michel in Saint Luke parish, to a "coloured bourgeoise" family. She attended Convent School in Dominica, the island's only girls' secondary school, and became interested in law while working at the colonial magistrate's court. She worked for many years as assistant to Alastair Forbes. She attended university in Toronto, Ontario, Canada before moving to the United Kingdom to attend the London School of Economics. She was a member of the sorority Sigma Gamma Rho. She passed the bar and returned to Dominica, where she became the island's first female lawyer, establishing a practice specialising in property law.

Ronald Wilson Reagan ( /ˈrɒnəld ˈwɪlsən ˈreɪɡən/; February 6, 1911 – June 5, 2004) was the 40th President of the United States, serving from 1981 to 1989. Prior to that, he was the 33rd Governor of California from 1967 to 1975 and a radio, film and television actor.

Born in Tampico, Illinois and raised in Dixon, Reagan was educated at Eureka College, earning a Bachelor of Arts degree in economics and sociology. After his graduation, Reagan moved first to Iowa to work as a radio broadcaster and then in to Los Angeles in 1937 where he began a career as an actor, first in films and later television. Some of his most notable films include Knute Rockne, All American, Kings Row, and Bedtime for Bonzo. Reagan served as president of the Screen Actors Guild, and later as a spokesman for General Electric (GE); his start in politics occurred during his work for GE. Originally a member of the Democratic Party, his positions began shifting rightward in the late 1950s, and he switched to the Republican Party in 1962. After delivering a rousing speech in support of Barry Goldwater's presidential candidacy in 1964, he was persuaded to seek the California governorship, winning two years later and again in 1970. He was defeated in his run for the Republican presidential nomination in 1968 as well as 1976, but won both the nomination and general election in 1980, defeating incumbent Jimmy Carter.

Louis Farrakhan Muhammad, Sr. (born Louis Eugene Wolcott; May 11, 1933, and formerly known as Louis X) is the leader of the syncretic and mainly African-American religious movement the Nation of Islam (NOI). He served as the minister of major mosques in Boston and Harlem, and was appointed by the longtime NOI leader, Elijah Muhammad, before his death in 1975, as the National Representative of the Nation of Islam. After Warith Deen Muhammad disbanded the NOI and started the orthodox Islamic group American Society of Muslims, Farrakhan started rebuilding the NOI. In 1981 he revived the name Nation of Islam for his organization, previously known as Final Call, regaining many of the Nation of Islam's National properties including the NOI National Headquarters Mosque Maryam, reopening over 130 NOI mosques in America and the world. The Southern Poverty Law Center describes Farrakhan as an antisemite.

Farrakhan is a black religious and social leader and a critic of the United States government on many issues. Farrakhan has been both praised and widely criticized for his often controversial political views and outspoken rhetorical style. In October 1995, he organized and led the Million Man March in Washington, D.C., calling on black men to renew their commitments to their families and communities. Due to health issues, in 2007, Farrakhan reduced his responsibilities with the NOI.

Fidel Alejandro Castro Ruz (Spanish: [fiˈðel ˈkastro]; born August 13, 1926) is a Cuban revolutionary and politician, having held the position of Prime Minister of Cuba from 1959 to 1976, and then President from 1976 to 2008. He also served as the First Secretary of the Communist Party of Cuba from the party's foundation in 1961 until 2011. Politically a Marxist-Leninist, under his administration the Republic of Cuba was converted into a one-party socialist state, with industry and business being nationalized under state ownership and socialist reforms implemented in all areas of society. On the international stage, he also served as the Secretary-General of the Non-Aligned Movement from 1979 to 1983 and 2006 to 2008.

Charles Robert Darwin, FRS (12 February 1809 – 19 April 1882) was an English naturalist. He established that all species of life have descended over time from common ancestors, and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection.

Darwin published his theory with compelling evidence for evolution in his 1859 book On the Origin of Species, overcoming scientific rejection of earlier concepts of transmutation of species. By the 1870s the scientific community and much of the general public had accepted evolution as a fact. However, many favoured competing explanations and it was not until the emergence of the modern evolutionary synthesis from the 1930s to the 1950s that a broad consensus developed in which natural selection was the basic mechanism of evolution. In modified form, Darwin's scientific discovery is the unifying theory of the life sciences, explaining the diversity of life.

Darwin's early interest in nature led him to neglect his medical education at the University of Edinburgh; instead, he helped to investigate marine invertebrates. Studies at the University of Cambridge encouraged his passion for natural science. His five-year voyage on HMS Beagle established him as an eminent geologist whose observations and theories supported Charles Lyell's uniformitarian ideas, and publication of his journal of the voyage made him famous as a popular author.