Task: Text Simplification
Input (English): in 1438 trevi passed under the temporal rule of the church as part of the legation of perugia , and thenceforth its history merges first with that of the states of the church , then -lrb- 1860 -rrb- with the united kingdom of italy.
Output (English): in 1438 trevi passed under the temporal rule of the church as part of the legation of perugia , and therefore its history merges first with that of the states of the church , then -lrb- 1860 -rrb- with the united kingdom of italy.