List ways the good angels (a) do service to the lord and (b) minister to the saints of god.

The good, or elect, angels perform a variety of functions. Scriptures record angels praising the Lord, worshiping the Son, ministering to Him, rejoicing over saved sinners, and keeping God's commandments.

Elect angels are assigned different duties in the kingdom. One of their primary responsibilities is ministering for them who shall be heirs of salvation. They become messengers and instruments of God's goodness to His creation. In many places in the Scriptures, we find that these angels function to deliver, prosper, provide, warn, strengthen, and reveal God's will to His people.

Explanation:

answer; the period of time known as the middle ages;

it affected it because the kingdoms (with trade) slowly got richer and richer.