Which of these is a similarity between early indus river valley and early chinese (shang) civilizations?

I believe the answer for this question is:

“agriculture was an important part of the economy”

The two civilizations were originated close to a river which makes the lands around it contains a bunch of excellent nutrients for the plants. This makes it easier for both these civilizations to keep up a good amount of crops as their main means of obtaining wealth.

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.