integrate state/整合宣称领土
Except special countries, all countries can core their claimed territory, as long as you have a claim and are adjacent to the core provinces, you can core it.
除特殊国家外，所有国家皆可核心化自己的宣称领土，只要你有宣称而且与核心省份相邻，皆可将其核心化
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