This wall was built to protect China from any harm and I think its done a pretty good job. It was built about 2,200 years ago as time went by they just kept on rebuilding and lengthened turning out to be 4,000 miles long in the end. Around a million people died making this wall. This wall still stands today and is quite often visited, this wall has definitly made history and as long as it stands China has pretty good protection.