By 1880, the u. s. had refueling stations for naval ships in the philippines and hawaii. true/false

The statement is false. By 1880, the United States did not have refueling stations for naval ships in the Philippines and Hawaii.

Explanation:

During the 1880s, Hawaii and the Philippines were not part of the American territory. Both territories were acquired in 1898, Hawaii through an annexation, and the Philippines as a result of the Spanish-American War. Therefore, at that time the United States could not have naval stations in those territories, as they had no sovereignty over them.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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