Administrative divisions of the Republic of China (1912–1949)

It used most of the same administrative divisions as the Qing dynasty but divided Inner Mongolia into four provinces and set up several municipalities under the authority of the Executive Yuan.

By this time the top-level divisions consisted of 35 provinces, 12 Yuan-controlled municipalities, one special administrative region and Tibet area.

After the Republic of China was established in 1912, it set up four more provinces in Inner Mongolia and two in historic Tibet, bringing the total to 28.

Four northeast provinces (Fengtian, Heilongjiang, Rehel, Jilin) were lost to Manchukuo, a puppet state of the Empire of Japan, in the 1930s.

China recognized the Mongolian People's Republic following the 1945 Sino-Soviet Treaty of Friendship and Alliance, formally relinquishing claims on the area of Outer Mongolia.

Thus, the claimed area of the ROC continues to include mainland China, several off-shore islands, and Taiwan.

[5] He does not, however, actively seek reunification, and prefers to maintain an ambiguous status quo in order to improve relations with the PRC.

[6] On May 21, 2012, the Mainland Affairs Council released a press announcement that said that Outer Mongolia has never been part of its constitutionally claimed territory.

Kuomintang legislator William Tseng said that the map is accurate, until the Constitution and laws are amended to change the nation's official territory while DPP lawmaker Chen Ting-fei stated, "With the way it portrays the ROC territory, that map is like one from a parallel universe—it is out of step with current thinking.

Provinces and areas of the Republic of China in 1912
Map of the Republic of China in 1926
Map of the Republic of China in 1936
Map of the Republic of China in 1946
Map of the Republic of China in 1949
A map showing the island of Taiwan, China and Mongolia. Taiwan and other nearby small islands are highlighted in dark blue and are identified as the "Free Area" of the ROC. China is highlighted in light blue and is identified as an area claimed by the ROC and controlled by the PRC. Mongolia is highlighted in red. Other minor areas are highlighted in different colors for having historically been claimed by the ROC but are now controlled by other countries including Russia, Japan or Pakistan among others.
A map showing the official divisions and territories historically claimed by the Republic of China, along with their status as of 2005
Map comparing political divisions as drawn by the Republic of China and the People's Republic of China