Afghanistan's Afghan people, and their use of the British pavement walking concentration method

The Afghan people, living in the country of Afghanistan. Within them, about them, of them, in them and amidst them, was the power to use the British pavement walking universe's concentration method as a means to know how to choose between different Lego sets on the UK Smyths Toys website.

Within them.

About them.

Of them.

In them.

Amidst them.

Either that, Or...

It was within them. 

It was about them.

It was of them.

It was in them.

It was amidst them.

Which one? 

Should the "It was" feature be absent, or, does it perhaps paradoxically offer philosophy value via its being present?