1.melody short phrases, large leaps
Towards the end of the past century composers as Steve Reich La Monte Young, Philip Glass, they began to explore what is now called minimalism, in which the music is stripped down to its most fundamental features; the music often features repetition and iteration. An early example is Terry Riley's In C from 1964, perhaps a random work in which short phrases are chosen by the musicians from a set list and played an arbitrary number of times, while the note C is repeated in quavers behind them. Philip Glass works are on the most representative perhaps also featuring as soundtracks of movies.
2, harmony mixed meter
This caused a very new sensation with an extreme irregular rhytm. While time signatures usually express a regular pattern of beat stresses continuing through a piece (sometimes a section), sometimes composers place a different time signature at the beginning of each bar, resulting in music with an extremely irregular rhythmic feel.
Examples;Promenade -- Modest Mussorgsky's Pictures at an Exhibition (1874) The opening already shows signs of this implement
3· rhythm atonality
Atonality first began as a pejorative term to condemn music in which chords were organized seemingly with no apparent coherence. the term describes music that does not conform to the system of tonal hierarchies that were traditionally seen in classical European music between the 1700's and 1900'a centuries Example; ending Schoenberg's "George Lieder" Op. 15/1
4.dynamics extremes
some pieces started to use additional markings of further emphasis. Extreme dynamic markings introduced an extreme range of loudness, or, and sometimes accompanied with very small differences of loudness within a normal range, this huge change was made possible with the orchestration of the work, usually using many loud instruments like brass and percussion playing at once. It became more widespread in late 1900s.
The Great Migration is depicted in the image. Also known as the Great Northward Migration, it marked the movement of 6 million african americans from the rural south of the United States to the Northwest, Midwest and West, that took place between 1916 and 1970. It was one of the most rapid internal migrations in the world not caused by war or famine, and it meant leaving their economic and social base to find a new one, made easier by the labor shortage that WWI had generated.
Answer: The Battle of Jumonville Glen
Explanation: Historians generally consider the Battle of Jumonville Glen as the opening battle of the French and Indian War in North America, and the start of hostilities in the Ohio valley.