Hello student,

State is organised under one government by political community. State consists of mandal, thalukas, districts, capital etc. Country consists of States, Union Territory, etc. Nation means Nationality and a large group of people United based on culture, history, language etc. Example, India is a country, India is a nation. Indian is the Nationality and those who are natives of India are called as Indians.

Example of Countries: India, Australia, China, Argentina, Germany etc

Example of States: Tamil Nadu, Telangana, Maharashtra, Kerala, Karnataka etc (States of India)

Examples of Nation: Greenland, Hong Kong, Puerto Rico, Bermuda

Hope this helps you.

Good Luck!!