Which of the following statements are true about challenges of expansion with respect to established democracies?

A. Ensuring greater power to local governments, extension of the federal principle to all the units of the federation.

B. Inclusion of women and minority groups, etc., fall under this challenge.

C. Most countries, including India and other democracies like the US face this challenge.

D. All the above given statements are true.

D. All the above given statements are true.