California seems to be the home of the homeless since many are often observed tramping along railroad tracks and through the downtown areas of the cities.

A．roaming

B．trimming

C．stealing

D．stamping

法是一种自然的权利，是理智的人的精神和理性，是衡量正义与非正义的标准。——（古罗马）西塞罗

根据材料和所学知识谈谈古代罗马法律制度对古代罗马历史的影响。