When did the Neolithic revolution start and end like what's the era in BC or BCE/ the year

What makes this speech a primary source? o a. the words are spoken by the president himself. o b. it uses narrative to keep the reader's attention. o c. it was written over 70 years in the past. o d. it contains a strong historical argument.

Describe the differences of 89 and x is 47

What factor aided the russians in defeating napoleon's troops?