The Moselle-valley ecclesiastical electorate, one of the three spiritual electors who chose the emperor.
Its left-bank lands were annexed by revolutionary France in 1801; the remainder was secularized in 1803.
The atlas holds 3 border frames for Electorate of Trier — the shape you scrub through changes in 898 · 1623 · 1766.
Context for the ecclesiastical electorates.