Which Indian states celebrate their Statehood Day on 21 January every year?

Introduction / Context:
Several Indian states celebrate a Statehood Day to mark the date on which they were formed or received full state status within the Indian Union. This question focuses on the states that share the same Statehood Day date, 21 January. Knowing such dates is important for general knowledge, government exams, and understanding the political evolution of the North Eastern region of India.

Given Data / Assumptions:

• The question specifies the date 21 January as Statehood Day.
• The options list North Eastern states Manipur, Tripura, and Meghalaya.
• The task is to pick the correct combination of states that celebrate on this date.

Concept / Approach:
To answer, you need to remember that several North Eastern states were given full statehood through the North Eastern Areas Reorganisation Act in the early nineteen seventies. Manipur, Tripura, and Meghalaya attained statehood around the same time, and the date 21 January is common to all three. The approach is to recall the historical reorganisation of the North East and identify which states share this common anniversary.

Step by Step Solution:
Step 1: Recall that Manipur became a full fledged state of India in January nineteen seventy two. Step 2: Remember that Tripura also attained statehood on the same date in January nineteen seventy two. Step 3: Note that Meghalaya, which was earlier an autonomous state within Assam, also achieved full state status on 21 January nineteen seventy two. Step 4: Therefore all three states Manipur, Tripura, and Meghalaya celebrate Statehood Day on 21 January every year. Step 5: From the options, the combination that includes all three is Manipur Tripura and Meghalaya.

Verification / Alternative check:
You can verify by remembering that the North Eastern Areas Reorganisation Act came into force in nineteen seventy one, leading to statehood from 21 January nineteen seventy two. Government celebrations, news reports, and state level functions are regularly held in these three states on 21 January to mark their formation day. No other Indian state shares this exact date with them, which confirms that the combination of all three is correct.

Why Other Options Are Wrong:
Manipur and Meghalaya: This option excludes Tripura, which also became a state on the same date, so it is incomplete.
Tripura and Meghalaya: This option leaves out Manipur, which also celebrates on 21 January, so it is not correct.
Manipur and Tripura: This option omits Meghalaya, which has the same Statehood Day, so it is also incomplete.

Common Pitfalls:
A common mistake is to assume that only two of these states share the date while the third has a different Statehood Day. Another pitfall is confusing Statehood Day with cultural or foundation days that can fall on different dates. Some learners also mix these dates with those of other North Eastern states like Arunachal Pradesh and Mizoram, which celebrate statehood on different days in February.

Final Answer:
The states that celebrate Statehood Day on 21 January are Manipur Tripura and Meghalaya.