Question: Roman Catholicism was the sole established religion in the Holy Roman Empire until the Reformation changed this drastically. In 1517, Martin Luther challenged the Catholic Church as he saw it as a corruption of Christian faith. Through this, he altered the course of European and world history and established Protestantism. The Thirty Years' War (16181648) was one of the most destructive conflicts in European history. The war was fought primarily in what is now Germany, and at various points involved most of the countries of Europe. The war was fought largely as a religious conflict between Protestants and Catholics in the Holy Roman Empire.
Is there an answer to this question: What religious war was fought in the 16th century?

Answer: unanswerable

Question: The Anglo-French hostilities were ended in 1763 by the Treaty of Paris, which involved a complex series of land exchanges, the most important being France's cession to Spain of Louisiana, and to Great Britain the rest of New France except for the islands of St. Pierre and Miquelon. Faced with the choice of retrieving either New France or its Caribbean island colonies of Guadeloupe and Martinique, France chose the latter to retain these lucrative sources of sugar, writing off New France as an unproductive, costly territory. France also returned Minorca to the British. Spain lost control of Florida to Great Britain, but it received from the French the Ile d'Orleans and all of the former French holdings west of the Mississippi River. The exchanges suited the British as well, as their own Caribbean islands already supplied ample sugar, and, with the acquisition of New France and Florida, they now controlled all of North America east of the Mississippi.
Is there an answer to this question: How were the British-French hostilities concluded?

Answer: hostilities were ended in 1763 by the Treaty of Paris

Question: Sonam Gyatso, after being granted the grandiose title by Altan Khan, departed for Tibet. Before he left, he sent a letter and gifts to the Ming Chinese official Zhang Juzheng (15251582), which arrived on March 12, 1579. Sometime in August or September of that year, Sonam Gyatso's representative stationed with Altan Khan received a return letter and gift from the Wanli Emperor (r. 15721620), who also conferred upon Sonam Gyatso a title; this was the first official contact between a Dalai Lama and a government of China. However, Laird states that when Wanli invited him to Beijing, the Dalai Lama declined the offer due to a prior commitment, even though he was only 400 km (250 mi) from Beijing. Laird adds that "the power of the Ming emperor did not reach very far at the time." Although not recorded in any official Chinese records, Sonam Gyatso's biography states that Wanli again conferred titles on Sonam Gyatso in 1588, and invited him to Beijing for a second time, but Sonam Gyatso was unable to visit China as he died the same year in Mongolia working with Altan Khan's son to further the spread of Buddhism.
Is there an answer to this question: Who did Sonam Gyatso send gifts to?

Answer: Zhang Juzheng

Question: Video data may be represented as a series of still image frames. The sequence of frames contains spatial and temporal redundancy that video compression algorithms attempt to eliminate or code in a smaller size. Similarities can be encoded by only storing differences between frames, or by using perceptual features of human vision. For example, small differences in color are more difficult to perceive than are changes in brightness. Compression algorithms can average a color across these similar areas to reduce space, in a manner similar to those used in JPEG image compression. Some of these methods are inherently lossy while others may preserve all relevant information from the original, uncompressed video.
Is there an answer to this question: What is easier to perceive than changes in frames?

Answer:
unanswerable