The passage discusses factors that contribute to differences in agricultural productivity among countries. Some countries produce more and better crops than others because the farmers in the former because they have more modern equipment. This can be inferred from the second paragraph: Some countries have a better comparative advantage in producing certain farm crops than other countries. In these other countries, there is a need to spend a lot of money on agriculture, particularly farming. Most farmers use outmoded tools. A lot of them have no place to store their crops, most of which are always destroyed by insects and pests before harvest time. All these have adverse effects on their productivity. The fact that they use outmoded tools and lack good storage facilities that prevent insects from being destroyed by pests shows that they lack modern equipment to make agricultural activities more productive.