Free-enterprise economy
A, B, and C will hurt an underdeveloped nation. D would help the nation strive into becoming an first would country. The question is asking what will not hurt an underdeveloped nation.
The largest expanse of time on the geologic time scale is the eon. An eon is known to be a unit of geological of time in which this is equivalent to billions of years in which gave it the title of having to be the largest expanse of time in regards with the geologic time scale.
It has a radius of 1220 km.
<span><span> V = d/ t
</span><span> t = v/d
-> 2.00 * 10 ^ 10 s
divide by 3600 and by 24 to get days
->232414 days
divide by no of days in a year
giving 636 years approx. </span></span>
1. I would say it is D. Europeans bought slaves from Asian traders.
2. Sikhism.
Hope this helps!!