Answer:
by introducing new method s of agriculture like land reclamation
The area of the Indian Subcontinent is 4.4 million km^2 whereas the USA is <span>9.8 million km². this means that the Indian Subcontinent is around half the size of the US</span>
A topographic map is a sort of map categorized by large-scale detail and measurable illustration of relief, normally using contour lines that has an elevation of highest and lowest. The difference between highest and lowest contour lines is RELIEF, The high relief, and low relief. The example of high relief are mountains; they are mapped with large contour intervals. While plains are the example of low relief that normally mapped with small contour intervals.