China's nationalist government collapsed after a war with European armies.
Answer:
C) a decreased focus on manufacturing
Explanation:
The shift from Jin to Song Dynasty between 1200 and 1450 led to an increase in population, a focus in agriculture and a decreased focus on manufacturing.
Open Door policy, statement of principles initiated by the United States in 1899 and 1900 for the protection of equal privileges among countries trading with China and in support of Chinese territorial and administrative integrity.
