The Great Wall built by Qin dynasty was built originally to defend Xiongnu. ... But because of the military geniuses Wei Qing and Huo Qubing, who win several wars against Xiongnu changed this situation, Xiongnu wasn't able to invade China any more. After the Xiongnu civil war, it was divided into two part.
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An outgrowth of the Romantic movement, the Hudson River school was the first native school of painting in the United States; it was strongly nationalistic both in its proud celebration of the natural beauty of the American landscape and in the desire of its artists to become independent of European schools of painting.
In general, the first step in setting a physical fitness goal is figuring out what you want out of the exercise--for instance if your goal is to get skinny, build muscle, etc.<span />