I would say because people separated from their kind and leading to speaking different. just like how people pick up accents when they go to the UK or other foreign countries.
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Answer:
Humans use natural resources for everything they do: for example, they use soil and water to grow food, wood to burn to provide heat or to build shelters, and materials such as iron or copper extracted from Earth to make cooking pans
Explanation:
The answer to that question is Fear.
To understand an author's purpose for writing, a reader must consider (you can choose more than one option if you think they apply):
1. The name of the text. The title of their work usually give us an idea of what is the author focusing on. The choice of words is a very important decision.
2. The author's use of language. With this, the reader can understand which is the author's believe about the subject and what he or she is trying to tell us.
3. The author's approach to discussing the topic. He or she will probably focus in some determined aspect of the topic, and this will tell much about his or her purpose for writing the piece.