What principle of the constitution is expressed in the 17th amendment?

It is the principle of popular, direct election of congressional members. The US Constitution said in the beginning that two Senators will be elected in each state by the state legislature. But since 1913, when the 17th Amendment came into force, two senators are elected by the vote of the people in each state for six years.

Explanation:

assuming that by westerners you mean americans. that they were mean and controlling and abusive to its peasants.

explanation:

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration