They consolidated their gains by building Antonine's Wall across the waist of Scotland between the Firth of Forth and the River Clyde in about a.d. 150.
Antonine's Wall was not able to be built until the year 2012.
mnli hypothesis: Antonine's Wall was not able to be built until the year 2012. premise: They consolidated their gains by building Antonine's Wall across the waist of Scotland between the Firth of Forth and the River Clyde in about a.d. 150.