Manchuria, a historical region in Northeast Asia, includes present-day northeastern China and parts of the Russian Far East. Its borders have changed over time, ranging from the three Chinese provinces of Heilongjiang, Jilin, and Liaoning to wider areas such as Outer Manchuria. Writers have long underscored its strategic and disputed character; Mary Knight highlighted its status as a contested prize for power, while Oliver Optic pointed out its Chinese population and productive lands.
E.G. Kemp described the arrival of Chinese settlers reshaping the region. Despite its rich past, the term "Manchuria" remains controversial because of its links to Japanese imperialism, resulting in its decreasing use in China in favor of "Northeast." This area, influenced by various ethnic groups and historical struggles, continues to represent complex geopolitical and cultural intersections.