Question: Zheng He (Chinese: Zheng He ; 1371-1433 or 1435) was a Chinese mariner, explorer, diplomat, fleet admiral, and court eunuch during China's early Ming dynasty. He was originally born as Ma He in a Muslim family, later adopted the conferred surname Zheng from Emperor Yongle. Zheng commanded expeditionary voyages to Southeast Asia, South Asia, Western Asia, and East Africa from 1405 to 1433. His larger ships stretched 120 meters or more in length.

Zheng He's sailing charts, the Mao Kun map, were published in a book entitled the Wubei Zhi (A Treatise on Armament Technology) written in 1621 and published in 1628 but traced back to Zheng He's and earlier voyages. It was originally a strip map 20.5 cm by 560 cm that could be rolled up, but was divided into 40 pages which vary in scale from 7 miles/inch in the Nanjing area to 215 miles/inch in parts of the African coast. Investigation into folios 19V to 20R of the Mao Kun Map which covers the Indian Ocean including the South India, Sri Lanka, the Maldives, and East Africa suggests that it is a composite of four maps, one for Sri Lanka, one for South India one for the Maldives and one for around 400 km of the East African coast, no further south than 6 degrees south of the Equator. Each of these maps is positioned at a different orientation to fit with the ocean currents and winds required of a sailing chart, rather than a formal map. The analysis also suggests that Arabic-speaking pilots with a detailed knowledge of the African coast were involved in the cartography. There is little attempt to provide an accurate 2-D representation; instead the sailing instructions are given using a 24-point compass system with a Chinese symbol for each point, together with a sailing time or distance, which takes account of the local currents and winds. Sometimes depth soundings are also provided. It also shows bays, estuaries, capes and islands, ports and mountains along the coast, important landmarks such as pagodas and temples, and shoal rocks. Of 300 named places outside China, more than 80% can be confidently located. There are also fifty observations of stellar altitude.

Using a quote from the above article, answer the following question: Did anyone dispute his charts?
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Question: Frederick Carlton "Carl" Lewis (born July 1, 1961) is an American former track and field athlete who won nine Olympic gold medals, one Olympic silver medal, and 10 World Championships medals, including eight gold. His career spanned from 1979 to 1996, when he last won an Olympic event. He is one of only three Olympic athletes who won a gold medal in the same individual event in four consecutive Olympic Games. Lewis was a dominant sprinter and long jumper who topped the world rankings in the 100 m, 200 m and long jump events frequently from 1981 to the early 1990s.

The International Association of Athletics Federations (IAAF), the governing body of track and field, organized the first World Championships in 1983. Lewis' chief rival in the long jump was predicted to be the man who last beat him: Larry Myricks. But though Myricks had joined Lewis in surpassing 28 ft 0 in (8.53 m) the year before, he failed to qualify for the American team, and Lewis won at Helsinki with relative ease. His winning leap of 8.55 m (28 ft 0 1/2 in) defeated silver medalist Jason Grimes by 0.26 m (0 ft 10 in). He also won the 100 m with relative ease. There, Calvin Smith who had earlier that year set a new world record in the 100 m at altitude with a 9.93 s performance, was soundly beaten by Lewis 10.07 s to 10.21 s. Smith won the 200 m title, an event which Lewis had not entered, but even there he was partly in Lewis' shadow as Lewis had set an American record in that event earlier that year. He won the 200 m on June 19 at the TAC/Mobil Championships in 19.75 s, the second-fastest time in history and the low-altitude record, only 0.03 s behind Pietro Mennea's 1979 mark. Observers here noted that Lewis probably could have broken the world record if he did not ease off in the final meters to raise his arms in celebration. Finally, Lewis ran the anchor in the 4 x 100 m relay, winning in 37.86 s, a new world record and the first in Lewis' career. Lewis' year-best performances in the 100 m and long jump were not at the World Championships, but at other meets. He became the first person to run a sub-10 second 100 m at low-altitude with a 9.97 s clocking at |Modesto on May 14. His gold at the World Championships and his other fast times earned him the number one ranking in the world that year, despite Calvin Smith's world record. At the TAC Championships on June 19, he set a new low-altitude record in the long jump, 8.79 m (28 ft 10 in) and earned the world number one ranking in that event. Track and Field News ranked him number two in the 200 m, despite his low-altitude record of 19.75 s, behind Smith, who had won gold at Helsinki. Lewis was again named Athlete of the Year by the magazine.

Using a quote from the above article, answer the following question: What happened in 1983?
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Answer:
first World Championships