Hi! You'll get better quality answers if you specify which region/culture and time period you're interested in (Ancient Egypt? Medieval France? Mongol empire? Incan Empire, etc), but you can get started with this section of the FAQ

• Gun (and other weapons) control

This question has kind of been asked before. Here is one such question and the answer links to others.

Generally yes during medieval times, weapons were restricted inside city limits in medieval England & Wales. You could only carry a sword if you were arriving at the city/town, leaving the city, were an official or a knight. Knives were used all the time so could be kept with you. Outside the city/town, you used weapons as defence as there could be bandits/outlaws.

The Mayor ordered on the King's behalf that no weapons be carried except in support of the mayoral authority. This proclaimed an old city ordinance and made the same exceptions; knights and squires may have their swords born after them by attendants.

Countrymen were directed to leave their staves and swords at their inns when they came to town , except when the purposed to use them in support of the Mayor and no weapons must be lent to them except for this one object.

Here is the full ordinance from 1467 with OCR errors and in old english:

*For the peace\ The Maire comaundeth, on the Kynges behalfe, that all maner of men kepe the pees of our souerayti lorde the Kyng, and that no man disturbull hit withynne the fraunches of this town^ as be armour or wepon beryng, as habergon, salett, by lie, swyrd, longe staff or dager, or any other maner of wepon, where thurgh the Kynges pecs should be disturbelyd or lettyd, yn payne of forfeture of his wepon and his body to preson, sauf in supportacion of the Maire, but yf hit be a knyght or a squyer a swyrde borne after hym, and that euery man of the con tray that bryng any wepon to the town leve hit at his In, and here hit not with ynne this town, neyther swyrde, biUe ne long staffe, but in ye supportacion of the Mayre aforesaid^ in payne of forfeture of his wepon and his body to preson as long as the Mayre lykes.

Taken from Records of the Borough of Leicester publ CUP Archive. Borough Legislation: The Peace, pp. xxxvi and 287. discussing the fifteenth century. All towns/cities set their own ordinances, but they were broadly similar in the main part, i.e. weapons are for the authorities and transit.

Here is a nice little talk on the subject.

Note that after the middle ages, we get into "duelling" times. Sword carrying was "kind of allowed" then but someone else would have to help on the details of who could carry and under what circumstances.