There are many imported provisions in our Indian constitution. However the skeleton has been provided by The Government of India Act 1935. Provisions concerning the suspension of Fundamental rights during the emergency have been sourced from Weimar Constitution of Germany.
The structural part of constitution is based on Government of India Act 1935, whereas philosophical part comprised of Fundamental Right and Directive Principles of state policy are derived from Constitution of USA & Ireland respectively.
Only the state of Jammu & Kashmir has its own constitution and hence enjoys special status under Article370. Apart from that some states have been conferred special status under Article 371 but they do not have their own constitution.
The parliamentary form of government is the one in which the executive is responsible to the legislature for its policies and acts. In presidential form of government the basic premise is separation of power and independence of executive from legislature.
Right to property was originally a Fundamental Right through Article 31. However the same has been deleted and Article 300A has been inserted as a legal right via44th Constitutional amendment Act. All other options are fundamental rights.
