1694
Cultivation of Tobacco
See: History of Vietnam
There is no "North Vietnam" as a country. The term "North Vietnam" was an erronous term used by the US to justify there intervention into Vietnam after the Paris Peace Accord 1954 which temporarily divide the country into 2 parts, North and South. FoIn the history there was no north or south country in Vietnam. The capital of Vietnam is Hanoi.
cotton gin
Rice Cultivation
rice grown on paddies is wet rice cultivation
China and Korea
physical and economic factor use in the cultivation of rice
The ethnic group that brought rice to Jamaica is primarily the West African enslaved people, who were brought to the island during the transatlantic slave trade. They introduced various rice cultivation techniques and varieties, which adapted well to Jamaica's climate. Additionally, Chinese immigrants in the 19th century also contributed to rice cultivation in Jamaica.
There is no similarity. The places that support massive rice cultivation, like southeastern China, Vietnam, Korea, etc. do not have large petroleum reserves. Conversely, most areas that do have oil wells and offshore drilling are too arid (relatively speaking) for rice to grow well.
The best soil for rice cultivation is clayey soil, as it retains water well and provides good nutrients for rice plants. Loamy soil with good drainage can also be suitable for rice cultivation. The pH level of the soil should be slightly acidic to neutral for optimal rice growth.
Oil mining is done by mechanics while rice cultivation is manual.
The Tang Dynasty (618-907) Vietnam had many successful tactics of growing different strains of rice. With their surplus of rice, many different countries wanted to invade them to know how Vietnam was so successful at growing rice. To ensure that their empire was safe, they sold rice continuously to other nations and empires, including China.
It wasn't introduced in Vietnam, it existed since WWII.
The top 20 rice-producing countries, according to the Food and Agriculture Organization:ChinaIndiaIndonesiaVietnamThailandBangladeshBurmaPhilippinesBrazilJapanPakistanCambodiaUnited StatesSouth KoreaEgyptNepalNigeriaMadagascarSri LankaLaos
Rice