Provinces · The later western provinces
LW-06 Insulae Baleares

The island province depended on shipping for administration, commerce, and defence. Farming, livestock, local production, and Mediterranean exchange supported communities of different sizes. Its separation gave governors a distinct maritime jurisdiction rather than treating the islands as a remote appendage of a mainland command.
Christian communities developed within these maritime networks. Vandal power later brought the islands into an African-centred kingdom, followed by Eastern Roman recovery in the sixth century. Their political affiliations changed while their island geography continued to dictate the practical importance of harbours, food supplies, and control of nearby sea routes.