which natural calamities did they face?
Famines, floods and eathquakes.
Ming dynasty
Famines became common in northern China in the early 17th century because of unusually dry and cold weather that shortened the growing season – effects of a larger ecological event now known as the Little Ice Age. Famine, alongside tax increases, widespread military desertions, a declining relief system, and natural disasters such as flooding and inability of the government to properly manage irrigation and flood-control projects caused widespread loss of life and normal civility. The central government, starved of resources, could do very little to mitigate the effects of these calamities. Making matters worse, a widespread epidemic spread across China from Zhejiang to Henan, killing an unknown but large number of people. The deadliest earthquake of all time, the Shaanxi earthquake of 1556, occurred during the Jiajing Emperor's reign, killing approximately 830,000 people.
what did rulers of the ming and qing dynasties have in common The "Mingshi" – the official history of the Ming dynasty was compiled by the Qing dynasty. when did the first dynasty rose to power? 1368. was there any remarkable progress in terms of technology during their period? Yes, the telescope, the "Yuanjingshuo" ("Far Seeing Optic Glass") and the field mill. how many ministries did they have? Six. which were they? Personnel, Revenue, Rites, War, Justice, and Public Works.
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Ming dynasty [SEP] Economic breakdown and natural disasters
During the last years of the Wanli era and those of his two successors, an economic crisis developed that was centered on a sudden widespread lack of the empire's chief medium of exchange: silver. The Portuguese first established trade with China in 1516, trading Japanese silver for Chinese silk, and after some initial hostilities gained consent from the Ming court in 1557 to settle Macau as their permanent trade base in China. Their role in providing silver was gradually surpassed by the Spanish, while even the Dutch challenged them for control of this trade. Philip IV of Spain (r. 1621–1665) began cracking down on illegal smuggling of silver from New Spain and Peru across the Pacific through the Philippines towards China, in favor of shipping American-mined silver through Spanish ports.