Someone know the Second Sino-Japanese War?

The Second Sino-Japanese War (1937–1945) was a military conflict that was primarily waged  

between the Republic of China and the Empire of Japan. The war made up the Chinese theater  

of the wider Pacific Theater of the Second World War. The beginning of the war is  

conventionally dated to the Marco Polo Bridge Incident on 7 July 1937, when a dispute  

between Japanese and Chinese troops in Peking escalated into a full-scale invasion. This  

full-scale war between the Chinese and the Empire of Japan is often regarded as the  

beginning of World War II in Asia. In 2017 the Ministry of Education in the People's  

Republic of China decreed that the term "eight-year war" in all textbooks should be  

replaced by "fourteen-year war", with a revised starting date of 18 September 1931 provided  

by the Japanese invasion of Manchuria. According to historian Rana Mitter, historians in  

China are unhappy with the blanket revision, and (despite sustained tensions) the Republic  

of China did not consider itself to be continuously at war with Japan over these six years.  

The Tanggu Truce of 1933 officially ended the earlier hostilities in Manchuria while the  

He-Umezu Agreement of 1935 acknowledged the Japanese demands to put an end to all anti-  

Japanese organizations in China.

The war was the result of a decades-long Japanese imperialist policy to expand its  

influence politically and militarily in order to secure access to raw material reserves,  

food, and labor. The period after World War I brought about increasing stress on the  

Japanese policy. Leftists sought universal suffrage and greater rights for workers[citation  

needed]. Increasing textile production from Chinese mills was adversely affecting Japanese  

production and the Great Depression brought about a large slowdown in exports. All of this  

contributed to militant nationalism, culminating in the rise to power of a militarist  

faction. This faction was led at its height by the Hideki Tojo cabinet of the Imperial Rule  

Assistance Association under edict from Emperor Hirohito. In 1931, the Mukden Incident  

helped spark the Japanese invasion of Manchuria. The Chinese were defeated and Japan  

created a new puppet state, Manchukuo; many historians cite 1931 as the beginning of the  

war. This view has been adopted by the PRC government. From 1931 to 1937, China and Japan  

continued to skirmish in small, localized engagements, so-called "incidents".

Explanation:

b) they want the land taken away from the wealthy landowners and given to peasants.