Why did Japan attack China in 1937, launching the Second Sino-Japanese War?

to spread communism to other parts of Asia
to secure natural resources for its growing economy and military
to secure a buffer area against a potential Soviet attack on Japan
to retaliate after China’s attack on Japanese port cities

it is  A.  to secure natural resources for its growing economy and military

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: