By Han XiaoOver 2,400 years ago, during the time of the Peloponnesian War that engulfed Greece, the leader of the Greeks, Pericles, delivered his famous ‘Funeral Oration’ to commemorate the soldiers ...

Five dynasties, or families, ruled ancient China for more than 6,000 years. The last one of the ancient period, the Han dynasty, ruled around the same time as the ancient Roman Empire.

Around 2,200 years ago, ancient China's first emperor, Qin Shi Huang, began connecting many small walls to build the now-famous Great Wall of China. It eventually became over 13,000 miles (20,000 ...