(Footnote: During this period the _Comitia Centuriata_ was reorganized on the basis of tribes (35) instead of money.) Meanwhile Carthage was not idle.

After subduing the revolt of the mercenaries in 237, she formed the project of obtaining SPAIN as compensation for the loss of Sicily, Sardinia, and Corsica.

Hamilcar Barca, by energetic measures, established (236-228) a firm foothold in Southern and Southeastern Spain.
At his death, his son-in-law, Hasdrubal, continued his work.

Many towns were founded, trade prospered, and agriculture flourished.

The discovery of rich silver mines near Carthago Nova was a means of enriching the treasury.