Question: When did ragtime flourished in the united states?

context: Ragtime – also spelled rag-time or rag time – is a musical style that enjoyed its peak popularity between 1895 and 1919. Its cardinal trait is its syncopated or "ragged" rhythm.
question: When did ragtime flourish and have peak popularity in the united states?
short_answers: 1895 and 1919
start of the 20th century
context: Ragtime was also a modification of the march style popularized by John Philip Sousa, with additional polyrhythms coming from African music. Ragtime composer Scott Joplin ("ca." 1868–1917) became famous through the publication of the "Maple Leaf Rag" (1899) and a string of ragtime hits such as "The Entertainer" (1902), although he was later forgotten by all but a small, dedicated community of ragtime aficionados until the major ragtime revival in the early 1970s. For at least 12 years after its publication, "Maple Leaf Rag" heavily influenced subsequent ragtime composers with its melody lines, chord progressions or metric patterns.
question: When did ragtime revival flourish in the united states?
short_answers: early 1970s
1970s

Answer: In the United States, ragtime has flourished at different times, with numerous revivals having occurred since newer styles supplanted ragtime in the 1920s. Ragtime first flourished and reached peak popularity in the US between 1895 and 1919. By the start of the 20th century, it had become widely popular throughout North America, enjoyed by people of many different subcultures. Ragtime flourished again in the US in revivals in the 1940s and 1950s, followed by a major revival in the early 1970s.