A primary source. A primary sources are first hand accounts like diaries, autobiographies, etc.
Answer:
It’s advantageous for several reasons
1. Access to seafood and the ability to use the ocean as a source of food
2. Easy trading access
3. The ability to send militaristic moves over water
Explanation:
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Answer:
The Himalayas
Explanation:
The huge mountains kept people from trading
The answer to this is "the polls", on in other words "surveys of public opinion".
The polls can for example look as follows:
51% of people prefer blue to red, and 49% prefer red to blue - this can for example inform toothpaste companies how to design their packaging.
Polls also help predict the result of political elections.