The main purpose of the many purges and public trials that took place in the soviet union in the 1930s was to

c. it required that townships set aside land for public schools.

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.