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The Appalachian Mountains (i/ˌæpəˈleɪʃᵻn/ or /ˌæpəˈlætʃᵻn/,[note 1] French: les Appalaches), often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period and once reached elevations similar to those of the Alps and the Rocky Mountains before they were eroded. The Appalachian chain is a barrier to east-west travel as it forms a series of alternating ridgelines and valleys oriented in opposition to any road running east-west.
In what era did the mountains form?
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The answer: Ordovician Period


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Mathematics: The earliest traces of mathematical knowledge in the Indian subcontinent appear with the Indus Valley Civilization (c. 4th millennium BC ~ c. 3rd millennium BC). The people of this civilization made bricks whose dimensions were in the proportion 4:2:1, considered favorable for the stability of a brick structure. They also tried to standardize measurement of length to a high degree of accuracy. They designed a ruler—the Mohenjo-daro ruler—whose unit of length (approximately 1.32 inches or 3.4 centimetres) was divided into ten equal parts. Bricks manufactured in ancient Mohenjo-daro often had dimensions that were integral multiples of this unit of length.
What was the name of the ruler that they created?
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The answer: the Mohenjo-daro ruler


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Armed conflict between ethnic Chinese rebels and the Myanmar Armed Forces have resulted in the Kokang offensive in February 2015. The conflict had forced 40,000 to 50,000 civilians to flee their homes and seek shelter on the Chinese side of the border. During the incident the government of China was accused of giving military assistance to the ethnic Chinese rebels. Burmese officials have been historically 'manipulated' and pressured by the communist Chinese government throughout Burmese modern history to create closer and binding ties with China, creating a Chinese satellite state in Southeast Asia.
To what benefit of China has its interest in the Burmese government brought about ?
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The answer: creating a Chinese satellite state in Southeast Asia


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Environmental anthropology is a sub-specialty within the field of anthropology that takes an active role in examining the relationships between humans and their environment across space and time. The contemporary perspective of environmental anthropology, and arguably at least the backdrop, if not the focus of most of the ethnographies and cultural fieldworks of today, is political ecology. Many characterize this new perspective as more informed with culture, politics and power, globalization, localized issues, and more. The focus and data interpretation is often used for arguments for/against or creation of policy, and to prevent corporate exploitation and damage of land. Often, the observer has become an active part of the struggle either directly (organizing, participation) or indirectly (articles, documentaries, books, ethnographies). Such is the case with environmental justice advocate Melissa Checker and her relationship with the people of Hyde Park.
Who does Melissa Checker have a relationship with?
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The answer:
people of Hyde Park