Think of it as the 21st century equivalent of lending a cup of sugar.

The 20th century equivalent is more complex.

It is our turn to imagine and build the 21st century equivalent.

"The 21st century equivalent is sharing a password to an online service."

It is also restorationist in character, seeking to restore the church to its 1st century equivalent.

It could be the 21st century equivalent of a victory garden.

He believed that sensationalist newspaper articles - the mid-19th century equivalent of local television news - were a distraction.

I hope we will eventually have its 21st century equivalent.

Someone said earlier that it is the 21st century equivalent of slavery.

It is the 21st century equivalent of slavery.