The Oldest Selective Breeding of Dogs
India's old "customs hedge" was a dense and thickly planted barrier of thorns established in 1869 and expanded to 2,300 miles (3,701km) – the distance from London to Istanbul (then Constantinople). It was guarded by 12,000 British officers. It's purpose: to prevent smugglers from sneaking salt from coastal areas of India into British-controlled states, where salt was taxed heavily. Mahatma Ghandi's famous "salt march" was in opposition to this hedge, which no longer exists.