Comic books first became a mass medium in the 1940s, with millions of copies selling every month, and educators back then took notice.
1940 के दशक में एक व्यापक माध्यम बनीं , हर महीने लाखों प्रतियाँ बिकने के साथ, और तभी शिक्षकों ने नोटिस किया ।