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Why did people want to go on the Oregon Trail?
OREGON TRAIL, one of several routes traveled in the mid-nineteenth century by pioneers seeking to settle in the western territories. Over a period of about thirty years, roughly 1830 to 1860, some 300,000 Americans crowded these overland trails. The Oregon Trail was first traveled in the early 1840s.
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1st one 3rd one and last one
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The beginning of the Precambrian period starts with the formation of Earth about 4.5 billion years ago and ends at the first sign of complex life about 540 million years ago. Though the Precambrian Period is often referred to as a period, it's actually the only supereon, which means that it spans multiple eons.
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Scientists have suggested that caves with good acoustics were chosen for art.
These caves were then used for religious ceremonies, which included chanting.
Researchers found that paintings are located at points where sound is amplified.
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