What imperial law was issued in AD. 386?

Answer

"By a law of the year 386, those older changes effected by Constantine were more rigorously enforced;
and, in general, civil transactions of every kind on Sunday were strictly forbidden. " - Neander's "Church
History,- Vol. II, page 300.

11. How did the Jewish leaders in the days of Christ, for the sake of gain, make void the fifth commandment?
19. What testimony does Eusebius (AD. 270-338), a noted bishop of the church, a flatterer of Constantine, and the reputed father of ecclesiastical history, bear upon this subject?
20. When and by what church council was the observance of the seventh day forbidden, and Sunday observance enjoined ?
Over what do the people of God finally gain the victory?
What did the dragon do when cast to the earth?
What did the prophet Isaiah predict of Christ?
With what should our prayers be mingled?

Questions & Answers are from the book Bible Readings for the Home Circle