They discuss the start of the Korean War.
They demonstrate some degree of bias.
1.Becoming the head of the Russian church
<span>The answer is Letter D. It is written in a tone that is appropriate for an explanatory essay than the other letters. Since the letters a,b,c, is informal for an explanatory essay. Letter D. explains the Neolithic Revolution with formality and proper use of words, than the other letters.</span>
<span>Russian social democratic labor party. This is one of many, yet I hope this helped.</span><span />