Original: Olivenza had been under Portuguese sovereignty since 1297 until it was occupied by the Spanish in 1801, and formally ceded by Portugal later that year by the Treaty of Badajoz.
Simplified: OlivenÃ a (Spanish: Olivenza) is a territory disputed by Portugal and Spain. The territory was under Portuguese rule between 1297 (Treaty of AlcaÃ ices) and 1801.