A fluent is a time-varying quantity or variable.
 The term was used by Isaac Newton in his early calculus to describe his form of a function.
 The concept was introduced by Newton in 1665 and detailed in his mathematical treatise, "Method of Fluxions".
 Newton described any variable that changed its value as a fluent – for example, the velocity of a ball thrown in the air.
 The derivative of a fluent is known as a fluxion, the main focus of Newton's calculus.
 A fluent can be found from its corresponding fluxion through integration.
Birthplace of Country Music Museum is a museum celebrating the historic 1927 Bristol Sessions, which recorded some of earliest country music in America when the Carter Family and Jimmie Rogers and several other musicians recorded for the first time before gaining prominence.
 The museum is located at 520 Birthplace of Country Music Way in Bristol, Virginia.
 A live radio station WBCM-LP broadcasts from a station within the museum.
 The original site of the Bristol recordings is marked by a plaque several blocks from the museum.
The fluxion of a "fluent" (a time-varying quantity, or function) is its instantaneous rate of change, or gradient, at a given point.
 Fluxions were introduced by Isaac Newton to describe his form of a derivative with respect to time.
 Newton introduced the concept in 1665 and detailed them in his mathematical treatise, "Method of Fluxions".
 Fluxions and fluents made up Newton's early calculus.
The International Kodály Seminar was named after the famous Hungarian musician, "Zoltán Kodály", who was a composer, pedagogue, ethnomusicologist.
 He is well-known around the world as the creator of a music method: "Kodály method".
 Foreign musicians from all over the world come to see his birthplace, "Kecskemét" to get some inspiration, learn his method for a better pedagogy and listen to Hungarian choirs and concerts.
 These are the main points for musicians to visit "Kecskemét, Bács-Kiskun county".
Kay Lee Arthur (born November 11, 1933) is an international Bible teacher, four-time ECPA Christian Book Award winning author, and co-CEO of Precept Ministries International.
 Kay has systematized studying the Bible, developing a set of steps to follow so as to "mine" the details of the given book under study.
 Being systematized, it is accessible to lay persons, rather than scholars only.
 Her method has been used by thousands, being taught and utilized in small to medium-sized home study groups.
 This method does not teach anything as to what the book under study teaches, but guides the process of the student discovering what is within it.
 This method relies heavily on inductive study, the process of building the picture from the details.
 Her method of Bible study, as well as her Bible teaching, her championing of the Inductive Bible Study Method, and her national and international media broadcasts have inspired many others to study the Bible methodically.
The Merck stitch method is a minimally invasive procedure for pinning protruding ears, developed by Merck.
 The method belongs to the special types of ear pinning surgeries.
 In contrast to other variations of minimally invasive procedures the stitch method does not use additional techniques from the traditional ear pinning surgeries (otoplasty).
 It belongs to the closed ear pinning surgeries because the ear is not cut open for the placement of the sutures.
 According to the experience of the author the Stitch Method is suitable for all protruding ears.
 The stitch method is the most frequently performed otoplasty among the minimally invasive methods.
Woolsthorpe Manor in Woolsthorpe-by-Colsterworth, near Grantham, Lincolnshire, England, is the birthplace and was the family home of Sir Isaac Newton.
 He was born there on 25 December 1642 (old calendar).
 At that time it was a yeoman's farmstead, principally rearing sheep.
Method of Fluxions is a book by Isaac Newton.
 The book was completed in 1671, and published in 1736.
 Fluxion is Newton's term for a derivative.
 He originally developed the method at Woolsthorpe Manor during the closing of Cambridge during the Great Plague of London from 1665 to 1667, but did not choose to make his findings known (similarly, his findings which eventually became the "Philosophiae Naturalis Principia Mathematica" were developed at this time and hidden from the world in Newton's notes for many years).
 Gottfried Leibniz developed his form of calculus independently around 1673, 7 years after Newton had developed the basis for differential calculus, as seen in surviving documents like “the method of fluxions and fluents..." from 1666.
 Leibniz however published his discovery of differential calculus in 1684, nine years before Newton formally published his fluxion notation form of calculus in part during 1693.
 The calculus notation in use today is mostly that of Leibniz, although Newton's dot notation for differentiation formula_1 for denoting derivatives with respect to time is still in current use throughout mechanics and circuit analysis.
Charles Hayes (1678–1760) was an English mathematician and chronologist, author of an early book on the method of fluxions.
 He was also a long-term official and defender of the Royal African Company, one of the earliest slave-trading companies established in Britain.
The Music of East Tennessee has a rich history, and played a major role in the development of modern country and bluegrass music.
 Bristol, known as "the birthplace of country music", (and home of the Birthplace of Country Music Museum), and Johnson City, notable for the Johnson City recording sessions, are both towns in the Tri-Cities region of East Tennessee.
 The music of East Tennessee is defined by country, gospel, and bluegrass artists, and has roots in Appalachian folk music.

Question: What country is the birthplace of the author of the Method of Fluxions?
Answer: England