Occupational safety and health act was signed December 29 1970.
Correct answer is: The section bordering the northern frontier is about 70 kilometers long. The Great Wall is a Chinese fortification built in order to protect the northern border of the Chinese Empire, and it’s considered one of the Wonders of the World. On average, it measures 6 to 7 meters high and 4 to 5 meters wide, and is estimated to be about 21,200 kilometers long.
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I think it's A . the crusaders attack on Constantinople
Answer:
James Fenimore Cooper was an American writer of the first half of the 19th century. His historical romances depicting frontier and Native American life from the 17th to the 19th centuries created a unique form of American literature.
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