Question: Helen Folasade Adu was born on 16 January 1959 in Ibadan, Oyo State, Nigeria. Her middle name, Folasade, means "honour confers a crown". Her parents, Adebisi Adu, a Nigerian lecturer in economics of Yoruba background, and Anne Hayes, an English district nurse, met in London, married in 1955 and moved to Nigeria. Her parents separated, however, and Anne Hayes returned to England, taking four-year-old Sade and older brother Banji with her to live with their grandparents near Colchester, Essex.

In late 1985, the band released their second album, Promise, which peaked at number one in both the UK and the US and became the band's first album to reach number one on the US Billboard 200. The album topped the chart in 1986 and spent two weeks at the peak position. Eventually, the album went on to sell four million copies in the region and was certified four times platinum by the Recording Industry Association of America (RIAA). The album spawned two singles "Never as Good as the First Time" and "The Sweetest Taboo," the latter of which was released as the album's lead single and stayed on the US Hot 100 for six months. "The Sweetest Taboo" peaked at number five on the US Billboard Hot 100, number one on the US adult Contemporary chart, and number three on the US Hot R&B/Hip-Hop Singles & Tracks. Sade was so popular that some radio stations reinstated the '70s practice of playing album tracks, adding "Is It a Crime" and "Tar Baby" to their playlists. The following year, 1986, the band won a Grammy Award for Best New Artist. In 1986, Sade made her acting debut in Absolute Beginners, a film adapted from the Colin MacInnes book of the same name about life in late-1950s London. Sade played the role of Athene Duncannon and lent her vocals to the film's accompanying soundtrack. The film was screened out of competition at the 1986 Cannes Film Festival and grossed PS1.8 million in the UK. Sade's third album, Stronger Than Pride, was released on 3 May 1988, and like Sade's previous album became a commercial success and certified three times platinum in the US. The album was popularized by four singles, most notably the album's second single "Paradise", which peaked at number 16 on the US Billboard Hot 100 and peaked at number one on the US Billboard Hot R&B/Hip-Hop Songs, becoming the band's first single to do so. Love Deluxe was released as the band's fourth studio album on 26 October 1992. The album peaked at number three on the US Billboard 200 and has sold 3.4 million copies in the United States. The album was later certified four times platinum by the RIAA for shipments of four million copies. The album was also commercially successful elsewhere, reaching number-one in France, and reaching the top ten in New Zealand, Sweden, Switzerland and the UK. The album went on to be certified gold in the United Kingdom. In November 1994, the group released their first compilation album, The Best of Sade. The album was another top ten hit in both the United Kingdom and the United States, certified platinum and four times platinum, respectively. The compilation album included material from Sade's previous albums, as well as a cover version of "Please Send Me Someone to Love" (1950), originally by Percy Mayfield.

Using a quote from the above article, answer the following question: What happened in 1989?
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Problem: 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.

In the decades after the last voyage, Imperial officials minimized the importance of Zheng He and his expeditions throughout the many regnal and dynastic histories they compiled. The information in the Yongle and Xuande Emperors' official annals was incomplete and even erroneous; other official publications omitted them completely. Although some have seen this as a conspiracy seeking to eliminate memories of the voyages, it is likely that the records were dispersed throughout several departments and the expeditions - unauthorized by (and in fact, counter to) the injunctions of the dynastic founder - presented a kind of embarrassment to the dynasty. State-sponsored Ming naval efforts declined dramatically after Zheng's voyages. Starting in the early 15th century, China experienced increasing pressure from the surviving Yuan Mongols from the north. The relocation of the capital north to Beijing exacerbated this threat dramatically. At considerable expense, China launched annual military expeditions from Beijing to weaken the Mongolians. The expenditures necessary for these land campaigns directly competed with the funds necessary to continue naval expeditions. Further, in 1449, Mongolian cavalry ambushed a land expedition personally led by the Zhengtong Emperor at Tumu Fortress, less than a day's march from the walls of the capital. The Mongolians wiped out the Chinese army and captured the emperor. This battle had two salient effects. First, it demonstrated the clear threat posed by the northern nomads. Second, the Mongols caused a political crisis in China when they released the emperor after his half-brother had already ascended and declared the new Jingtai era. Not until 1457 and the restoration of the former emperor did political stability return. Upon his return to power, China abandoned the strategy of annual land expeditions and instead embarked upon a massive and expensive expansion of the Great Wall of China. In this environment, funding for naval expeditions simply did not happen. However, missions from Southeast Asia continued to arrive for decades. Depending on local conditions, they could reach such frequency that the court found it necessary to restrict them: the History of Ming records imperial edicts forbidding Java, Champa, and Siam from sending their envoys more often than once every three years.

was there a war

Answer with quotes:
Further, in 1449, Mongolian cavalry ambushed a land expedition personally led by the Zhengtong Emperor at Tumu Fortress, less than a day's march from the walls of the capital.