Find the appropriate word for (5).

I believe the biggest challenge ....(1).... the world is that of  ....(2).... poverty across a large ....(3).... of the ....(4).... population and the continued ....(5).... between the rich and poor nations. The globalisation ....(6).... of the Nineties was  ....(7).... to change all that and it has not made a significant impact as yet. Indeed, poverty today is the single biggest ....(8).... of place and democracy. It is high time that even the most ....(9).... rich citizen or indeed all of us ....(10).... people, realise that the only way to ....(11).... prosperity is to defeat poverty.