Question: The Sumerians developed a complex system of metrology c. 4000 BC. This advanced metrology resulted in the creation of arithmetic, geometry, and algebra. From c. 2600 BC onwards, the Sumerians wrote multiplication tables on clay tablets and dealt with geometrical exercises and division problems. The earliest traces of the Babylonian numerals also date back to this period. The period c. 2700 2300 BC saw the first appearance of the abacus, and a table of successive columns which delimited the successive orders of magnitude of their sexagesimal number system. The Sumerians were the first to use a place value numeral system. There is also anecdotal evidence the Sumerians may have used a type of slide rule in astronomical calculations. They were the first to find the area of a triangle and the volume of a cube.
Is there an answer to this question: When was the abacus first seen between?

Answer: 2700 2300 BC

Question: A government report covered by the Guardian in 2002 indicates that between 1940 and 1979, the Ministry of Defence "turned large parts of the country into a giant laboratory to conduct a series of secret germ warfare tests on the public" and many of these tests "involved releasing potentially dangerous chemicals and micro-organisms over vast swaths of the population without the public being told." The Ministry of Defence claims that these trials were to simulate germ warfare and that the tests were harmless. Still, families who have been in the area of many of the tests are experiencing children with birth defects and physical and mental handicaps and many are asking for a public inquiry. According to the report these tests affected estimated millions of people including one period between 1961 and 1968 where "more than a million people along the south coast of England, from Torquay to the New Forest, were exposed to bacteria including e.coli and bacillus globigii, which mimics anthrax." Two scientists commissioned by the Ministry of Defence stated that these trials posed no risk to the public. This was confirmed by Sue Ellison, a representative of Porton Down who said that the results from these trials "will save lives, should the country or our forces face an attack by chemical and biological weapons." Asked whether such tests are still being carried out, she said: "It is not our policy to discuss ongoing research." It is unknown whether or not the harmlessness of the trials was known at the time of their occurrence.
Is there an answer to this question: What was released by Porton Down in 2002?

Answer: unanswerable

Question: Menander Protector mentions a Daurentius (577579) that slew an Avar envoy of Khagan Bayan I. The Avars asked the Slavs to accept the suzerainty of the Avars, he however declined and is reported as saying: "Others do not conquer our land, we conquer theirs so it shall always be for us".
Is there an answer to this question: When did Protector live?

Answer: unanswerable

Question: In Canada, the Supreme Court of Canada was established in 1875 but only became the highest court in the country in 1949 when the right of appeal to the Judicial Committee of the Privy Council was abolished. This court hears appeals of decisions made by courts of appeal from the provinces and territories and appeals of decisions made by the Federal Court of Appeal. The court's decisions are final and binding on the federal courts and the courts from all provinces and territories. The title "Supreme" can be confusing because, for example, The Supreme Court of British Columbia does not have the final say and controversial cases heard there often get appealed in higher courts - it is in fact one of the lower courts in such a process.
Is there an answer to this question: Why can the title "Supreme Court" be confusing?

Answer:
unanswerable