Use "marginalising" in a sentence

1. A further cause of marginalising such programmes is the problem of ghetto hours.

2. In so doing, politicians seem intent on marginalising the Beveridge inheritance and reinforcing social divisions.

3. In economic terms, understanding was reached on the need to define policies which will enable African countries to gain maximum benefit from the liberalisation of trade throughout the world, thus reversing the current trend of consistently and progressively marginalising Africa in world trade.