Answer:
<h2>When he arrived in Europe, Pershing had openly scorned the slow trench warfare of the previous three years on the Western Front, believing that American soldiers' skill with the rifle would enable them to avoid costly and senseless fighting over a small area of no-man's land.</h2>
Harappan seals have shown connections to the Mesopotamian civilization. The seals date between 1872-73 CE. The structure of the seals are similar to that of the Mesopotamian civilization and provide evidence for the trade existing between the two civilizations.
After the civil war the single political entity was confirmed which led to more than four million enslaved Americans being freed. A more established federal government was also a consequence of the civil war.
all of the above is the answer
It took the Mongols 162 years