All the ______ countries likely to have Constitution.

The correct answer is democratic.

Key Points

• A democratic country has a system of government in which the people have the power to participate in decision-making.
• A constitution is an aggregate of fundamental principles or established precedents that constitutethe legal basis of polity, organisation or other type of entity and commonly determine how that entity is to be governed. 
• All democratic countries are most likely to have a constitution.
• However, there are exceptions as a democratic country may not have a constitution.
• For example, Britain does not have a codified constitution.
• All countries that have a constitution are not necessarily democractic.​

Additional Information

• Oligarchic - A government or system in which power is held by a select few individuals or a small class of powerful people.
• Communist - It is a political and economic doctrine that aims to replace private property and a profit-based economy with public ownership and communal control of at least the major means of production (e.g., mines, mills, and factories) and the natural resources of a society.
• Totalitarian - a country or a system of government in which there is only one political party that has absolute power and control over the people.