Because the unilateral system is easier to get as close to the dimension the engineer specified.
Bilateral tolerancing (also known as symmetric tolerancing) is a method of tolerancing a dimension using equal plus and minus deviations from the nominal dimension.
Unilateral tolerances (also known as asymmetric tolerances) on the other hand specify a deviation in only one direction, either plus or minus, from the specified nominal dimension. Unilateral tolerances may also take the form of plus and plus-plus, minus and minus-minus, or plus or minus some amount and plus or minus a lesser amount.
He led India into a state of independence and freedom as well as inspired movements for civil rights across the world
<span>They would want to expand east+south because it would be hard to expand the other directions through deserts and mountains.
Hope this helps!! :)</span>
The answer to your question is D.
