Given the wide range of styles in classical music, from Medieval plainchant sung by monks to Classical and Romantic symphonies for orchestra from the 1700s and 1800s to avant-garde atonal compositions for solo piano from the 1900s, it is difficult to list characteristics that can be attributed to all works of that type. However, there are characteristics that classical music contains that few or no other genres of music contain, such as the use of a printed score and the performance of very complex instrumental works (e.g., the fugue). As well, although the symphony did not exist through the entire classical music period, from the mid-1700s to the 2000s the symphony ensembleand the works written for ithave become a defining feature of classical music.
Through what period did the symphony not exist?
the entire classical music period

The ceremonial county of Somerset consists of a two-tier non-metropolitan county, which is administered by Somerset County Council and five district councils, and two unitary authority areas (whose councils combine the functions of a county and a district). The five districts of Somerset are West Somerset, South Somerset, Taunton Deane, Mendip, and Sedgemoor. The two unitary authorities which were established on 1 April 1996 following the break-up of the short-lived county of Avon are North Somerset, and Bath & North East Somerset.
What are the 5 districts of Somerset
The five districts of Somerset are West Somerset, South Somerset, Taunton Deane, Mendip, and Sedgemoor

From the late 19th century, the South used a colloquial term, the one-drop rule, to classify as black a person of any known African ancestry. This practice of hypodescent was not put into law until the early 20th century. Legally the definition varied from state to state. Racial definition was more flexible in the 18th and 19th centuries before the American Civil War. For instance, President Thomas Jefferson held persons who were legally white (less than 25% black) according to Virginia law at the time, but, because they were born to slave mothers, they were born into slavery, according to the principle of partus sequitur ventrem, which Virginia adopted into law in 1662.
When did Virginia adopt The Principle of Partus Sequitur Ventrem?
1662