The primacy of the composer's written score has also led, today, to a relatively minor role played by improvisation in classical music, in sharp contrast to the practice of musicians who lived during the baroque, classical and romantic era. Improvisation in classical music performance was common during both the Baroque and early romantic eras, yet lessened strongly during the second half of the 19th and in the 20th centuries. During the classical era, Mozart and Beethoven often improvised the cadenzas to their piano concertos (and thereby encouraged others to do so), but they also provided written cadenzas for use by other soloists. In opera, the practice of singing strictly by the score, i.e. come scritto, was famously propagated by soprano Maria Callas, who called this practice 'straitjacketing' and implied that it allows the intention of the composer to be understood better, especially during studying the music for the first time.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did improvisation begin to lessened strongly?
Ah, so.. the second half of the 19th and in the 20th centuries

Beginning in 1689, the colonies became involved in a series of wars between Great Britain and France for control of North America, the most important of which were Queen Anne's War, in which the British conquered French colony Acadia, and the final French and Indian War (175463) when Britain was victorious over all the French colonies in North America. This final war was to give thousands of colonists, including Virginia colonel George Washington, military experience which they put to use during the American Revolutionary War.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did wars between Britain and France in North America start?
Ah, so.. 1689

Fiame Mata'afa Faumuina Mulinu'u II, one of the four highest-ranking paramount chiefs in the country, became Samoa's first Prime Minister. Two other paramount chiefs at the time of independence were appointed joint heads of state for life. Tupua Tamasese Mea'ole died in 1963, leaving Malietoa Tanumafili II sole head of state until his death on 11 May 2007, upon which Samoa changed from a constitutional monarchy to a parliamentary republic de facto. The next Head of State, Tuiatua Tupua Tamasese Efi, was elected by the legislature on 17 June 2007 for a fixed five-year term, and was re-elected unopposed in July 2012.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Before becoming a de facto parliamentary republic, what form of government did Samoa have?
Ah, so..
constitutional monarchy