Write in short about badaling?

Badaling Great Wall was built in the Ming Dynasty (1505) to occupy a commanding and strategic position for protecting the Juyongguan Pass (Juyongguan section of the Great Wall) to its south, further protecting the city of Beijing.

answer; the population in brazil is very diverse there are many races and ethnic groups

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.