ANSWER
<em>Russia</em>
HERES HOW:
<em>On March 30, 1867, the United States reached an agreement to purchase Alaska from Russia for a price of $7.2 million. The Treaty with Russia was negotiated and signed by Secretary of State William Seward and Russian Minister to the United States Edouard de Stoeckl.</em>
<em>I DIDN'T WRIGHT THIS SO THIS IS NOT MINE BUT READ THIS IT SHOULD HELP :)</em>
Answer: The wall was the northernmost point of the Roman empire for 20 years between the 140s and 160s AD before its forces were withdrawn from Scotland by the mid 160s. Hadrian's Wall became once again the frontier of the province until the final withdrawal of the legions from Britannia in the early 5th century AD.
Explanation:
<span>Increase in social stratification</span>
It is known as source of information those documents that contain usefull data to satisfy a demand of knowledge or information. A very important part of the investigation process is to distinguish and select the sources more suitable for the work in progress.
In which matters to the question itself I believe that the sources you should avoid are those who could be subjective or express a single point of view like:
- Political sources focused on expressing a single point of view: This source is one to avoid because it doesn´t admit critics to the message and the idea it´s not open to debate.
- Commercial sources focused on selling a product: In this case you need to understand the prupose of the information provided by this sources. The objective of such sources is to sell not to inform so the facts wrote on it could be not quite academically right. Sources like this are known for the using of a lot of subjective adjectives.
The Government-sponsored websites and the subscription-based sources must have a deeper investigation to notice if they are objectives.
At last the acamedic sources that provide clear information are the ones you should use for a investigation work. They are objectives and made by professionals and pass through a very hard selection process made by colleagues and are the result of sometimes years of investigations.
I hope the answer help you and provides you what you were looking for. I give you a little explanation of what the sources of information are to put in context the answer.
