A Challenge is an opportunity for progress:
(i) A challenge is just not any problem. We usually call only those difficulties a challenge which are significant and can be overcome. For example Established democracies face the challenge of expansion of democratic principle across the regions which can be overcome by empowering different social groups and local government.
(ii) A challenge is a difficulty that carries an opportunity for progress like the foundational challenge faced by evolving democracies. Once the transition is made to democracy, it opens the opportunity for further progress in democracy.
(iii) So, once we overcome a challenge, we go up to a higher level than before. For instance, democracy after facing the foundational challenge and challenge of expansion, leads to the challenge of deepening. This challenge involves empowering the political institutions like political parties, pressure groups and movement groups.
