Production of more food--the system allowed for more food to be produced which fed the workers in an industrial economy.
The 'four-field system' rotates crops between the 4 fields no longer needing to keep one empty because one of the crops would replenish the field with nutrients while the others take nutrients away from the fields. <span />
1370 INR would be the answer to the first one because 54.80 times 25 =1370
24.75 is the answer to the second one because 25 times .99 = 24.75
South Africa is the answer to the third one
i think that you should write the paragraph but in South Africa 1$ is equal to over 8$ whereas in the EU 1$ equals only .75$
2013 it would have been cheaper to buy tablets from India <span />