Federalism has several challenges. what are they? write in points
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Tere are operational issues with regard to federalism, mainly including issues such as, a) the overall direction of the new federal structure and its relevance to the devolution of power and ensuring the effective delivery of services, b) the communication and coordination between the three tiers of government.

Federal System is a Source of Weakness for the State.

Federalism Prevents Uniformity of Laws.

The Method of Distribution of Powers cannot be Perfect.

Rigidly of the Constitution is Major Disadvantage of Federalism.

State cannot Pursue Strong Foreign and Domestic Policies.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

i believe your answer is mountains.