Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Clients and Foreigners
Such were the laws under which burgesses and clients lived in Rome. Between these two classes, so far as we can see, there subsisted from the beginning complete equality of private rights. The foreigner on the other hand, if he had not submitted to a Roman patron and thus lived as a client, was beyond the pale of the law both in person and in property.
Whatever the Roman burgess took from him was as rightfully acquired as was the shellfish, belonging to nobody, which was picked up by the sea-shore; but in the case of ground lying beyond the Roman bounds, while the Roman burgess might take practical possession, he could not be regarded as in a legal sense its proprietor; for the individual burgess was not entitled to advance the bounds of the community.
The case was different in war: whatever the soldier who was fighting in the ranks of the levy gained, whether moveable or immoveable property, fell not to him, but to the state, and accordingly here too it depended upon the state whether it would advance or contract its bounds.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/1-11-law-justice.asp?pg=17