From social existence, please analyze the causes of current global climate change related to Vietnam.

Explanation:

Climate change in Vietnam will lead to a situation, in the coming decades, where Vietnam will be among the most affected countries by global climate change. A large number of studies show that Vietnam is experiencing climate change and will be severely negatively affected in the coming decades. These negative effects include sea-level rise, salinity intrusion, and other hydrological problems like flood, river mouth evolution, sedimentation as well as the increasing frequency of natural hazards such as cold waves, storm surges will all exert negative effects on the country's development and economy including agriculture, aquaculture, road infrastructure, etc.

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it affected it because the kingdoms (with trade) slowly got richer and richer.