<prompt> Translate the following text to EnglishKonstantino aliongeza kuta mpya za jiji, akifuata mpango aliodai kuwa alipewa na Kristo katika maono, na akaagiza jukwaa kubwa la kati lililopambwa na nguzo ya ushindi na pia makaburi mengine kadhaa.  <response>: Constantine added new city walls, following a plan he claimed to have been given by Christ in a vision, and commissioned a grand central forum decorated with a triumphal column as well as several other monuments. 