Giải thích lý do vì sao vấn đề hội nhập quốc tế là vấn đề cần được quan tâm và quan trọng trong giai đoạn hiện nay

answer: there were new carvings etched into the back of the sculpture and each shoulder was turned into a symbol of the birdman.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

i think it is the third one.

b. the american revolution