One would be the Great Wall of China, and another would be the Ming Tombs.
Answer:
Although the nullification crisis was ostensibly about South Carolina's refusal to collect federal tariffs, many historians believe it was actually rooted in growing Southern fears over the movement in the North for the abolition of slavery.
The state that the United Nations labeled an aggressor and sent forces to fight in 1950 was North Korea.
I hope I helped!<span />
