这个跟美国的历史有关。独立战争时,民兵起到了很大的作用。民兵自然可以持枪。
zhè ge gēn Měiguó de lìshǐ yǒuguān 。Dúlìzhànzhēng shí ,mínbīng qǐdào le hěndà de zuòyòng 。mínbīng zìrán kěyǐ chí qiāng 。
It has to do with American history. During their war for independence, citizen militias played a big role. Militias had to be able to have guns.