How communication existed in ancient times?

After digging to a depth of 100 metres last year, Russian scientists found traces of copper wire dating back 1000 years, and came to the conclusion that their ancestors already had a telephone network one thousand years ago.

So, not to be outdone, in the weeks that followed, American scientists dug 200 metres and headlines in the US papers read: 'US scientists have found traces of 2000 year old optical fibres, and have concluded that their ancestors already had advanced high-tech digital telephone 1000
years earlier than the Russians.

'One week later, the Indian newspapers reported the following: 'After digging as deep as 500 metres, Indian scientists have found absolutely nothing.

They have concluded that 5000 years ago, their ancestors were already using wireless technology.