Question: A narrative ballet or story ballet, is a form of ballet that has a plot and characters, Plot refers to the sequence of events inside a story which affect other events through the principle of what?
Context: Valentin Zeglovsky (1908 – 1985) was a ballet dancer with the Ballets Russes.  Zeglovsky was a Ukrainian Russian dancer who toured Australia with the De Basil Company (1936–1939).  In January 1942 he joined the Kirsova company during its Melbourne season which began at His Majesty's Theatre.  He subsequently started a ballet school in Australia and then London.  He was one of the de Basil dancers who is considered to have contributed to Australian ballet.  His book "Ballet Crusade" is an account of the key events in Zeglovsky's life: his childhood in Kharkov (Kharkiv) in the Ukraine, where he was born in 1908, the Russian Revolution, his apprenticeship in Riga with the State Opera House and Ballet School, his tours with the De Basil Company, and his decision to live and work in Melbourne.  First published in December 1943, it was reprinted in slightly different form by Reed & Harris in September 1944 and again in November 1944.  John Reed's correspondence indicates that Reed & Harris wanted to print 5,000 copies of the book; however, a Reed letter, dated 12 November 1943, states that paper shortages at the Advertiser in Adelaide limited the printing of the first edition to 1,500 copies.  In Zeglovsky's ballet school in London, Zbyshek Lisak trained under him. Neoclassical ballet is the style of 20th-century classical ballet exemplified by the works of George Balanchine.  The term "neoclassical ballet" appears in the 1920s with Sergei Diaghilev's Ballets Russes, in response to the excesses of romanticism and modernity.  It draws on the advanced technique of 19th-century Russian Imperial dance, but strips it of its detailed narrative and heavy theatrical setting.  What is left is the dance itself, sophisticated but sleekly modern, retaining the pointe shoe aesthetic, but eschewing the well-upholstered drama and mime of the full-length story ballet. Nonlinear narrative, disjointed narrative or disrupted narrative is a narrative technique, sometimes used in literature, film, hypertext websites and other narratives, where events are portrayed, for example, out of chronological order or in other ways where the narrative does not follow the direct causality pattern of the events featured, such as parallel distinctive plot lines, dream immersions or narrating another story inside the main plot-line.  It is often used to mimic the structure and recall of human memory, but has been applied for other reasons as well. A narrative ballet or story ballet is a form of ballet that has a plot and characters.  It is typically a production with full sets and costumes. A narrative thread, or plot thread (or, more ambiguously, a storyline), refers to particular elements and techniques of writing to center the story in the action or experience of characters rather than to relate a matter in a dry "all-knowing" sort of narration.  Thus the narrative threads experienced by different but specific characters or sets of characters are those seen in the eyes of those characters that together form a plot element or subplot in the work of fiction.  In this sense, each narrative thread is the narrative portion of a work that pertains to the world view of the participating characters cognizant of their piece of the whole, and they may be the villains, the protagonists, a supporting character, or a relatively disinterested official utilized by the author, each thread of which is woven together by the writer to create a work. Plot refers to the sequence of events inside a story which affect other events through the principle of cause and effect.  The causal events of a plot can be thought of as a series of sentences linked by "and so".  Plots can vary from simple structures such as in a traditional ballad to complex interwoven structures sometimes referred to as an "imbroglio".  The term "plot" can serve as a verb and refer to a character planning future actions in the story. A flashback is an interjected scene that takes the narrative back in time from the current point in the story.  Flashbacks are often used to recount events that happened before the story's primary sequence of events to fill in crucial backstory.  In the opposite direction, a flashforward (or prolepsis) reveals events that will occur in the future.  Both flashback and flashforward are used to cohere a story, develop a character, or add structure to the narrative.  In literature, internal analepsis is a flashback to an earlier point in the narrative; external analepsis is a flashback to a time before the narrative started. The 1991 Toronto bomb plot refers to an Islamist terror plot that sought to blow up two Toronto buildings - the India Centre cinema and the Vishnu Hindu temple - potentially killing 4,500 persons; it was the first 'homegrown' Islamic terriost plot on Toronto. Comic ballet is a subcategory of narrative ballet, and denotes a dramatic work of a light or comic nature. Raphaël Baroni (born October 17, 1970) is a Swiss narratologist.  He is full Associate Professor at the Department of French as a foreign language at the University of Lausanne.  He is mainly interested in the analysis of narrative time, plot, tellability, and sequence, in relation with narrative interest and transmedial analysis.  He is the author of "La tension narrative" (Seuil, 2007).  As summrized by Emma Kafalenos, in this book, Baroni emphasizes "that the source of narrative tension is the combination of uncertainty and anticipation: the perceiver’s experience of simultaneously not knowing something and wanting to know it.  The uncertainty may be in regard to something that has already happened, in which case the anticipation is a form of curiosity.  Or the uncertainty may be in regard to something that has not yet happened, in which case the anticipation is a form of suspense."  Baroni is also the author of "L’oeuvre du temps" (Seuil, 2009) and is co-editor of "Narrative Sequence in Contemporary Narratology" (Ohio State Univ.  Press, 2016).
Answer: cause and effect