The sounding of the Seventh Trumpet includes all that happens down to Revelation 20:3.

         When it sounded John heard Great Voices in Heaven saying The Kingdoms of this World are become the Kingdoms of Our Lord, and of His Christ; and He shall reign for ever and ever.

                   This is the announcement that the time had come for Christ to take The Kingdom though it doesn't fully come into His possession for 3 1/2 years.