In November 1795, there was a debate in Parliament on the high price of corn and Burke wrote a memorandum to Pitt on the subject. In December Samuel Whitbread MP introduced a bill giving magistrates the power to fix minimum wages and Fox said he would vote for it. This debate probably led Burke to editing his memorandum, as there appeared a notice that Burke would soon publish a letter on the subject to the Secretary of the Board of Agriculture, Arthur Young; but he failed to complete it. These fragments were inserted into the memorandum after his death and published posthumously in 1800 as, Thoughts and Details on Scarcity. In it, Burke expounded "some of the doctrines of political economists bearing upon agriculture as a trade". Burke criticised policies such as maximum prices and state regulation of wages, and set out what the limits of government should be:
When was 'Thoughts and Details on Scarcity' published?
1800

Von Neumann's principal contribution to the atomic bomb was in the concept and design of the explosive lenses needed to compress the plutonium core of the Fat Man weapon that was later dropped on Nagasaki. While von Neumann did not originate the "implosion" concept, he was one of its most persistent proponents, encouraging its continued development against the instincts of many of his colleagues, who felt such a design to be unworkable. He also eventually came up with the idea of using more powerful shaped charges and less fissionable material to greatly increase the speed of "assembly".
What principal contribution did von Neumann make to atomic bomb?
concept and design of the explosive lenses needed to compress the plutonium core

In June, the fleets transported the Allied expeditionary forces to Varna, in support of the Ottoman operations on the Danube; in September they again transported the armies, this time to the Crimea. The Russian fleet during this time declined to engage the allies, preferring to maintain a "fleet in being"; this strategy failed when Sevastopol, the main port and where most of the Black Sea fleet was based, came under siege. The Russians were reduced to scuttling their warships as blockships, after stripping them of their guns and men to reinforce batteries on shore. During the siege, the Russians lost four 110- or 120-gun, three-decker ships of the line, twelve 84-gun two-deckers and four 60-gun frigates in the Black Sea, plus a large number of smaller vessels. During the rest of the campaign the allied fleets remained in control of the Black Sea, ensuring the various fronts were kept supplied.
How many 60-gun frigates did the Russians lose in the Black Sea?
four