[1][2][3][4][5] The region is contested by China, America, and Japan, with India recently engaging as well as part of its Act East policy and overall rise on the world stage.
[14] The allure of easier access to and spreading civilizing influence over territories throughout the Pacific Rim incentivized America to expand westward,[15] with its borders and influence reaching Asia by the mid-to-late 19th century in a kind of extended "Manifest Destiny",[16] and America taking over Guam and the Philippines and dispelling the Spanish Empire from Pacific Asia in 1898.
[22]Deng Xiaoping's reforms in late-20th-century China led to the country becoming more economically important, re-assuming a central role in Pacific Asia by the 2007–2008 financial crisis.
[24] Tensions have emerged between Pacific Asian countries around the South China Sea (such as regarding Taiwan) and regarding the Korean conflict,[25] with Japan having somewhat of a leadership role in the region but also being rejected at times due to other Pacific Asian countries' reaction to colonial-era Japanese war crimes,[26] with America being asked to maintain influence in the region as a counterweight to Japan.
[27] The desire of Pacific Rim countries to counterbalance China has led to India's increasing involvement in multiple coalitions throughout the region as part of the broader Indo-Pacific.