The period of Elizabeth's regency was marked by a continuing growth in feudalism and a consequent loss of royal control of areas of the island of Sicily. This had begun with Frederick III. He succeeded in the agglomeration of so-called "lands" along the coasts in domains such as Trapani, Marsala, Sciacca, Licata, Terranova, Lentini, Taormina, Milazzo and Termini, and also in the hinterland in domains such as Nicosia, Randazzo, Troina and Castrogiovanni, Caltagirone, Noto, Corleone and Biovna, Polizza and Monte San Giuliano. Yet despite this consolidation of control, Sicily overall experienced an increase of domains under feudal control, either through the creation or the restoration of numerous baronies, such as the domains of Geraci, Mineo, Modica, Adernò, Aidone, Collesano, and Augusta. During her regency, Alcamo notably passed to the control of the military aristocracy, in 1349, and other barons enclosed within their walls fiefdoms such as Buscemi, Pettineo and Luppino, along with constructing numerous fortresses. All of Sicily eventually came into contact with the military power of the aristocracy through the duties of military service and the carrying out of justice possessed by the nobility. This influence of local power was, beyond the simple creation or re-establishment of baronies, another way in which the aristocracy gained power and threatened the authority of the Sicilian throne. The two sides of the struggle to come between the baronies and the throne had thus been outlined before the beginning of Elizabeth's regency and continued along the same course during it, eventually flaring up into civil war.