Describe the new techniques during the song dynasty which led to increased farming.

With more food available, the population soared. Advances in farming included irrigation systems, pumps and water control devices, and the development of new strains of fast-ripening rice. Rice is grown in flooded fields called paddies. Before the Song Dynasty, the Tang government altered China's land tenure system

Irrigation systems and pumps and water control devices.flooded fields

the hollywood film industry of 1950 was threatened on several different fronts. television broadcasting was rapidly becoming the dominant entertainment medium in the united states. the paramount anti-trust consent decree requiring separate ownership for production companies and theater chains had gone into effect on 1 january 1950. large numbers of young men and women were marrying, having children, and moving to the suburbs, which affected the viability of downtown first-run movie theaters. foreign revenues were endangered by protectionist tactics including quota systems, high taxes, and blocked funds. finally, the morality and patriotism of hollywood films and filmmakers were under attack from government, religious, and citizens' groups.

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