The Gregorian calendar was a reform of the Julian calendar instituted in 1582 by Pope Gregory XIII, after whom the calendar was named, by papal bull Inter gravissimas dated 24 February 1582. The motivation for the adjustment was to bring the date for the celebration of Easter to the time of year in which it was celebrated when it was introduced by the early Church. Although a recommendation of the First Council of Nicaea in 325 specified that all Christians should celebrate Easter on the same day, it took almost five centuries before virtually all Christians achieved that objective by adopting the rules of the Church of Alexandria (see Easter for the issues which arose).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which Pope started the Julian calendar?
Ah, so.. unanswerable

Western commentators post-9/11 often perceive madaris as places of radical revivalism with a connotation of anti-Americanism and radical extremism, frequently associated in the Western press with Wahhabi attitudes toward non-Muslims. In Arabic the word madrasa simply means "school" and does not imply a political or religious affiliation, radical or otherwise. Madaris have varied curricula, and are not all religious. Some madaris in India, for example, have a secularised identity. Although early madaris were founded primarily to gain "knowledge of God" they also taught subjects such as mathematics and poetry. For example, in the Ottoman Empire, "Madrasahs had seven categories of sciences that were taught, such as: styles of writing, oral sciences like the Arabic language, grammar, rhetoric, and history and intellectual sciences, such as logic." This is similar to the Western world, in which universities began as institutions of the Catholic church.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the common western perception of the teaching received at madaris?
Ah, so.. anti-Americanism and radical extremism

Presbyterianism is a part of the Reformed tradition within Protestantism which traces its origins to the British Isles. Presbyterian churches derive their name from the presbyterian form of church government, which is governed by representative assemblies of elders. Many Reformed churches are organized this way, but the word "Presbyterian," when capitalized, is often applied uniquely to the churches that trace their roots to the Scottish and English churches that bore that name and English political groups that formed during the English Civil War. Presbyterian theology typically emphasizes the sovereignty of God, the authority of the Scriptures, and the necessity of grace through faith in Christ. Presbyterian church government was ensured in Scotland by the Acts of Union in 1707 which created the kingdom of Great Britain. In fact, most Presbyterians found in England can trace a Scottish connection, and the Presbyterian denomination was also taken to North America mostly by Scots and Scots-Irish immigrants. The Presbyterian denominations in Scotland hold to the theology of John Calvin and his immediate successors, although there are a range of theological views within contemporary Presbyterianism. Local congregations of churches which use presbyterian polity are governed by sessions made up of representatives of the congregation (elders); a conciliar approach which is found at other levels of decision-making (presbytery, synod and general assembly).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): To which Isles can the Civil War be traced?
Ah, so..
unanswerable