Listen to the recording and answer the question by selecting all the correct responses. You will need to select more than one response.
Q. What are the main reasons that made early 20th century the Golden Age of American Agriculture?
(1)The improvement of farming methods due to advanced technology.
(2)The governmental involvement with pesticide control.
(3)The introduction of newly-developed seeds.
(4)The increase of the female labor in farming.
« Previous 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Next »