Sometimes it's for religions . <span />
MATTHEW PERRY sailed to Japan. This American show of strength forced the TOKUGAWA SHOGUN to end Japanʼs long period of isolation and open its ports for trade with the West. (Commodore MATTHEW PERRYʼs visits to Japan in 1853 and 1854 resulted in the OPENING OF TRADE and diplomatic relations with Japan.)
Answer:
Upon the First Emperor's death, China plunged into civil war, exacerbated by floods and droughts. In 207 BCE, Qin Shi Huang's son was killed, and the dynasty collapsed entirely. Chaos reigned until 202 BCE, when Gaozu, a petty official, became a general and reunited China under the Han Dynasty.
Explanation:
Antarctica. There's conflicting info on this one but as far as your test/research goes, it's most certainly not any of the others.