Problem: Europe spent these years rebuilding and coming to terms with the vast human cost of the conflict. The economy of the United States became increasingly intertwined with that of Europe. In Germany, the Weimar Republic gave way to episodes of political and economic turmoil, which culminated with the German hyperinflation of 1923 and the failed Beer Hall Putsch of that same year. When Germany could no longer afford war payments, Wall Street invested heavily in European debts to keep the European economy afloat as a large consumer market for American mass-produced goods. By the middle of the decade, economic development soared in Europe, and the Roaring Twenties broke out in Germany, Britain and France, the second half of the decade becoming known as the "Golden Twenties". In France and francophone Canada, they were also called the "annees folles" ("Crazy Years").
Europe has a large market for what?
The answer is the following: American mass-produced goods

Problem: The ritual form on which the Grand Orient of France was based was abolished in England in the events leading to the formation of the United Grand Lodge of England in 1813. However the two jurisdictions continued in amity (mutual recognition) until events of the 1860s and 1870s drove a seemingly permanent wedge between them. In 1868 the Supreme Council of the Ancient and Accepted Scottish Rite of the State of Louisiana appeared in the jurisdiction of the Grand Lodge of Louisiana, recognised by the Grand Orient de France, but regarded by the older body as an invasion of their jurisdiction. The new Scottish rite body admitted blacks, and the resolution of the Grand Orient the following year that neither colour, race, nor religion could disqualify a man from Masonry prompted the Grand Lodge to withdraw recognition, and it persuaded other American Grand Lodges to do the same.
The Grand Orient de France and the United Grand Lodge of England continued in amity until when?
The answer is the following: the 1860s and 1870s

Problem: 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).
Who revised the Julian calendar?
The answer is the following: Pope Gregory XIII

Problem: There has been a trend in writing the history of this period to depict Hellenistic art as a decadent style, following of the Golden Age of Classical Athens. Pliny the Elder, after having described the sculpture of the classical period says: Cessavit deinde ars ("then art disappeared"). The 18th century terms Baroque and Rococo have sometimes been applied, to the art of this complex and individual period. The renewal of the historiographical approach as well as some recent discoveries, such as the tombs of Vergina, allow a better appreciation of this period's artistic richness.
Who said "then art dissapeared"?
The answer is the following:
Pliny the Elder