The term 'Alsace-Lorraine' refers to a region in northeastern France that was annexed by Germany in 1871 and returned to France in 1918. It is known for its unique culture, which is a blend of French and German influences. The two crossword solutions, 'Alsace' (6 letters) and 'QUICHE' (6 letters), are both associated with this region. Alsace is the name of the region itself, while QUICHE is a type of savory tart that originated in Alsace-Lorraine.