드립니다 Animals models were used in development of vaccine for smallpox,
Animals models were used in development of vaccine for smallpox, which thanks to worldwide vaccination, abolished this disease.에서 which가 계속적 용법으로 쓰였고 thanks to worldwide vaccination 이 부분이 삽입된 거라고 보는 게 맞을까요?
네 맞아요 여기서 which는 계속적 용법이고 thanks to worldwide vaccination은 삽입구로 보면 돼요