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Chengdu Economic and Technological Development Zone (Chinese: ; pinyin: Chengdu jingji jishu kaifa qu) was approved as state-level development zone in February 2000. The zone now has a developed area of 10.25 km2 (3.96 sq mi) and has a planned area of 26 km2 (10 sq mi). Chengdu Economic and Technological Development Zone (CETDZ) lies 13.6 km (8.5 mi) east of Chengdu, the capital city of Sichuan Province and the hub of transportation and communication in southwest China. The zone has attracted investors and developers from more than 20 countries to carry out their projects there. Industries encouraged in the zone include mechanical, electronic, new building materials, medicine and food processing.
When was the Chengdu Economic and Technological Development Zone approved?
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The answer: February 2000

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Slavery and slaves were part of the social order; there were slave markets where they could be bought and sold. Many slaves were freed by the masters for services rendered; some slaves could save money to buy their freedom. Generally, mutilation and murder of slaves was prohibited by legislation. However, Rome did not have a law enforcement arm. All actions were treated as "torts," which were brought by an accuser who was forced to prove the entire case himself. If the accused were a noble and the victim, not a noble, the likelihood of finding for the accused was small. At most, the accused might have to pay a fine for killing a slave. It is estimated that over 25% of the Roman population was enslaved.
Who was responsible for seeking justice in the Roman courts?
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The answer: an accuser who was forced to prove the entire case himself

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Concerning the early Polish tribes, geography contributed to long-standing traditions. The Polish tribes were internalized and organized around a unifying religious cult, governed by the wiec, an assembly of free tribesmen. Later, when safety required power to be consolidated, an elected prince was chosen to govern. The election privilege was usually limited to elites.
What was governing the polish tribes?
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The answer: wiec

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The March 1906 Scientific American article by American pioneer William E. Meacham explained the basic principle of hydrofoils and hydroplanes. Bell considered the invention of the hydroplane as a very significant achievement. Based on information gained from that article he began to sketch concepts of what is now called a hydrofoil boat. Bell and assistant Frederick W. "Casey" Baldwin began hydrofoil experimentation in the summer of 1908 as a possible aid to airplane takeoff from water. Baldwin studied the work of the Italian inventor Enrico Forlanini and began testing models. This led him and Bell to the development of practical hydrofoil watercraft.
What did Bell start drawing after reading the article?
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The answer:
hydrofoil boat