Cacia

Cacia is a civil parish in the municipality of Aveiro. The population in 2011 was 7,354, in an area of 35.75 km².

==History== There are no clear indications of the first peoples to inhabit the region; João Gaspar suggests that they could have been people from the lands of Além-Coa, who migrated into the region some 3000 years B.C. after the lakes of the Iberian plateau dried up. Later, Phoenicians and Greeks established themselves in the Vouga estuary, motivated by commercial interests and took advantage of the local region to produce salt. The Celts expanded into southern Europe (at the end of the 5th–6th century) occupying the central Meseta around Castela-a-Nova and coast of Portugal north of the Tagus until Galicia (avoiding pre-existing tribes). Roman references to the Celts of the Vouga and Mondego suggest that they were the Turduli, and with the Celts along the Guadiana River, travelled to the northern part of the peninsula and dispersed along the Atlantic coast until Galicia. In addition to salt production, the peoples of the Vouga estuary (Vacca as it was called) concentrated on fishing, salting fish and agriculture (such as the raising of pigs and cattle). There is also evidence that the locals extracted millions of tonnes of limestone and granite that were used local and other public works.