When did construction start on the great wall of china?
No context provided
When did construction start on the first versions of the great wall of china?
771–476 bc Pre-imperial China 771 BC
The Great Wall of China visible today largely dates from the Ming dynasty, as they rebuilt much of the wall in stone and brick, often extending its line through challenging terrain. Some sections remain in relatively good condition or have been renovated, while others have been damaged or destroyed for ideological reasons, deconstructed for their building materials, or lost due to the ravages of time. For long an object of fascination for foreigners, the wall is now a revered national symbol and a popular tourist destination.
When did construction start on most parts of the great wall of china visible today?
1368–1644 Ming dynasty
History of the Great Wall of China
History of the Great Wall of China
https://en.wikipedia.org/wiki/History%20of%20the%20Great%20Wall%20of%20China
 First versions of the great wall of china date back to 771-476 bc during pre-imperial china. The Great Wall of China visible today largely dates from the Ming dynasty, 1368-1644.