Question: There are three main chemical pulping processes: the sulfite process dates back to the 1840s and it was the dominant method extent before the second world war. The kraft process, invented in the 1870s and first used in the 1890s, is now the most commonly practiced strategy, one of its advantages is the chemical reaction with lignin, that produces heat, which can be used to run a generator. Most pulping operations using the kraft process are net contributors to the electricity grid or use the electricity to run an adjacent paper mill. Another advantage is that this process recovers and reuses all inorganic chemical reagents. Soda pulping is another specialty process used to pulp straws, bagasse and hardwoods with high silicate content.
Is there an answer to this question: What decade does the sulfite process date to?

Answer: 1840s


Question: The dry lands of Namibia were inhabited since early times by San, Damara, Nama and, since about the 14th century AD, by immigrating Bantu who came with the Bantu expansion from central Africa. From the late 18th century onwards, Orlam clans from the Cape Colony crossed the Orange River and moved into the area that today is southern Namibia. Their encounters with the nomadic Nama tribes were largely peaceful. The missionaries accompanying the Orlams were well received by them, the right to use waterholes and grazing was granted against an annual payment. On their way further northwards, however, the Orlams encountered clans of the Herero tribe at Windhoek, Gobabis, and Okahandja which were less accommodating. The Nama-Herero War broke out in 1880, with hostilities ebbing only when Imperial Germany deployed troops to the contested places and cemented the status quo between Nama, Orlams, and Herero.
Is there an answer to this question: What type of people were the Herero tribe?

Answer: unanswerable


Question: Between 10 and 17 October 1757, a Hungarian general, Count András Hadik, serving in the Austrian army, executed what may be the most famous hussar action in history. When the Prussian King Frederick was marching south with his powerful armies, the Hungarian general unexpectedly swung his force of 5,000, mostly hussars, around the Prussians and occupied part of their capital, Berlin, for one night. The city was spared for a negotiated ransom of 200,000 thalers. When Frederick heard about this humiliating occupation, he immediately sent a larger force to free the city. Hadik, however, left the city with his Hussars and safely reached the Austrian lines. Subsequently, Hadik was promoted to the rank of Marshal in the Austrian army.
Is there an answer to this question: How was Berlin spared?

Answer: city was spared for a negotiated ransom of 200,000 thalers


Question: The Second Great Awakening began around 1790. It gained momentum by 1800. After 1820, membership rose rapidly among Baptist and Methodist congregations, whose preachers led the movement. It was past its peak by the late 1840s. It has been described as a reaction against skepticism, deism, and rationalism, although why those forces became pressing enough at the time to spark revivals is not fully understood. It enrolled millions of new members in existing evangelical denominations and led to the formation of new denominations.
Is there an answer to this question: When did the Second Great Awakening start?

Answer:
around 1790