Several post-colonial countries in Africa have merged to remove the artificial borders imposed by previous colonial powers.

The ethnic divisions date to long before the colonial powers drew artificial borders to create nation-states in the area.

"I hereby declare the withdrawal of all military troops from along the Libyan-Egyptian artificial borders," he said.

They would have withered and died, restricted to artificial borders, dying inch by inch as the trees died.

Generally, it doesn't really make sense to limit an investment to an artificial border.

South of that artificial border between a city alive and a city of ghosts, an eerie serenity took hold.

"But this is an artificial border, and we have to overcome it, just as on Germany's western side."

We wanted to do away with artificial borders.

There are no artificial borders in the sky, and the laws of aeromechanics apply everywhere.

However, there is a risk of a domino effect on a continent traumatised by wars caused by artificial borders inherited from colonial times.