The microscope by using tiny glass leanse to see the cells.
An American theoretical physicst
China's First Five Year Plan was an economic program that ran from 1953 to 1957. It set ambitious goals for industries and areas of production deemed priorities by the CCP. The Five Year Plan was supported by Soviet Russia, which contributed advice, logistics and material support.
Well even without prior research, our keyword is 'ranches' usually they will have crops and barns and such. But regardless, the answer is; (Edit.) The Spanish settlers in towns raised crops and animals to make money, and provide for their family rather than spending money on food everyday or week.
B) raising crops, cattle, and sheep
