Question: What country does Alfred Mendes and C. L. R. James have in common?

Context articles: Grenada National State Anthem
5.1 Music Disc
Terlet Airfield
The Black Jacobins
Rufus Brome
Leibniz harmonic triangle
Ternus illusion
Every Saturday
C. L. R. James
Alfred Mendes

The Grenada National State Anthem was the national anthem of Grenada from 1967 until independence in 1974 during the period that Grenada was an associated state of Great Britain under the Associated Statehood Act 1967.
 The words are by Rolstan Percival Jawahir Adams (1946–2008) and the music is by Dr. John George Fletcher (D.Mus., F.R.C.O. (C.H.M.), A.D.C.M., F.T.C.L., L.R.A.M., A.R.C.M., L.R.S.M.) (1931–2015).
The DTS Music Disc (official name), DTS Audio CD or 5.1 Music Disc is an audio Compact Disc that contains music in one of various possible surround sound configurations.
 The specification permits discrete channel configurations from 2.0 (L, R) to 6.1 (L, R, C, LFE, Ls, Rs, Cs), although 5.1 (L, R, C, LFE, Ls, Rs) is the most common.
 Physically, a DTS Music Disc conforms to the Red Book standard; however a DTS bitstream, based on the Coherent Acoustics compression algorithm, is actually encapsulated in each PCM audio track.
 This configuration permits any non-DTS enabled player to output multi-channel audio when connected to an external DTS-compliant processor (e.g. a typical AV receiver) via a digital interface like S/PDIF or HDMI, provided that the player does not modify the bitstream internally.
Terlet Airfield (Dutch: "Vliegveld Terlet" ) (ICAO: EHTL) is a small airfield in the Netherlands 2.5 NM north of Arnhem in Gelderland and close to Deelen Air Base.
 It is used mainly by gliders and motor gliders, as well as some light aircraft such as the Aviat Husky, mainly used as tugs for the gliders.
 It has six grass winchtracks, 04L/22R, 04C/22C, 04R/22L, 12/30, 14R/32L and 14L/32R.
 From only one strip motorised aircraft are allowed to operate, and only when prior permission is obtained.
The Black Jacobins: Toussaint L'Ouverture and the San Domingo Revolution is a 1938 book by Afro-Trinidadian historian C. L. R. James, a history of the Haitian Revolution of 1791–1804.
 He went to Paris to research this work, where he met Haitian military historian Alfred Auguste Nemours.
 James's text places the revolution in the context of the French Revolution, and focuses on the leadership of Toussaint L'Ouverture, who was born a slave but rose to prominence espousing the French Revolutionary ideals of liberty and equality.
 These ideals, which many French revolutionaries did not maintain consistently with regard to the black humanity of their colonial possessions, were embraced, according to James, with a greater purity by the persecuted blacks of Haiti; such ideals "meant far more to them than to any Frenchman."
On the 22 July 1993 after his two-hour-long Induction, Enrollment and Enthronement service followed by an hour long Ordination and Consecration on the Feast of Saint Mary Magdalene from 8:00 a.m. at the then newly renovated Cathedral Church of St. Michael he was finally, made its first Black diocesan bishop and head of the then 80,000 member diocese.
 The islands top organist of more than 40 years Dr. John George Fletcher (D.Mus., F.R.C.O. (C.H.M.), A.D.C.M., F.T.C.L., L.R.A.M., A.R.C.M., L.R.S.M.) planned a very special programme with his choir for all the services which were officiated by the cathedral’s Dean and Chapter, with arrangements by then Precentor, Reverend Michael Clarke included ushers from the six main Anglican churches of St. Mary’s, St. Paul’s, St. Peter’s, Holy Trinity, St. Matthias, as well as St. Michael’s.
 His brother Rev. Dr. Henderson L. Brome of the St. Cyprian's Episcopal Church, Boston (Roxbury), MA was invited to speak.
 Regarded as a highly auspicious occasion, all the services themselves were broadcast and recorded by the islands local television network Caribbean Broadcasting Corporation.
The Leibniz harmonic triangle is a triangular arrangement of unit fractions in which the outermost diagonals consist of the reciprocals of the row numbers and each inner cell is the cell diagonally above and to the left minus the cell to the left.
 To put it algebraically, "L"("r", 1) = 1/"r" (where "r" is the number of the row, starting from 1, and "c" is the column number, never more than "r") and "L"("r", "c") = "L"("r" - 1, "c" - 1) − "L"("r", "c" - 1).
The Ternus illusion, also commonly referred to as the Ternus Effect is an illusion related to human visual perception involving apparent motion.
 In a simplified explanation of one form of the illusion, two discs, (referred to here as L for left and C for centre) are shown side by side as the first frame in a sequence of three frames.
 Next a blank frame is presented for a very short, variable duration.
 In the final frame, two similar discs (C for centre and R for right) are then shown in a shifted position.
 Depending on various factors including the time intervals between frames as well as spacing and layout, observers perceive either element motion, in which L appears to move to R while C remains stationary or they report experiencing group motion, in which L and C appear to move together to C and R. Both element motion and group motion can be observed in animated examples to the right in Figures 1 and 2.
Every Saturday (1866–1874) was an American literary magazine published in Boston, Massachusetts, in the mid-19th century.
 Edited by Thomas Bailey Aldrich, it featured work by C. G. Bush, Wilkie Collins, F. O. C. Darley, Charles Dickens, J.W. Ehninger, Sol Eytinge Jr., Harry Fenn, Alfred Fredericks, Thomas Hardy, J.J. Harley, W.J. Hennessy, Winslow Homer, Augustus Hoppin, Ralph Keeler, S.S. Kilburn, Granville Perkins, W.L. Sheppard, Alfred Tennyson, Alfred Waud and others.
 It was published by Ticknor and Fields (ca. 1866–1867); Fields, Osgood, & Co. (ca. 1868–1870); and James R. Osgood & Co. (ca. 1871–1874)
Cyril Lionel Robert James (4 January 1901 – 31 May 1989), who sometimes wrote under the pen-name J. R. Johnson, was an Afro-Trinidadian historian, journalist and socialist.
 His works are influential in various theoretical, social, and historiographical contexts.
 His work is a staple of subaltern studies, and he figures as a pioneering and influential voice in postcolonial literature.
 A tireless political activist, James's writing on the Communist International stirred debate in Trotskyist circles, and his history of the Haitian Revolution, "The Black Jacobins", is a seminal text in the literature of the African Diaspora.
Alfred Hubert Mendes (18 November 1897 – 1991), novelist and short-story writer, was a leading member of the 1930s "Beacon group" of writers (named after the literary magazine "The Beacon") in Trinidad that included Albert Gomes, C. L. R. James and Ralph de Boissière.
 Mendes is best known as the author of two novels - "Pitch Lake" (1934) and "Black Fauns" (1935) - and for his short stories written during the 1920s and 1930s.
 He was "one of the first West Indian writers to set the pattern of emigration in the face of the lack of publishing houses and the small reading public in the West Indies.