A millennium is a period of 1,000 years. It is used to measure long spans of time in history, helping to understand major changes that occur over extended periods. For example, the time from 1 to 1000 AD is the 1st millennium, and the time from 1001 to 2000 AD is the 2nd millennium. Dividing time into millennia helps historians study broader trends and transformations across many generations. It provides a larger context for understanding significant historical developments.
This question related to Chapter 4 Social Science Class 6th NCERT.
From the Chapter 4. Timeline and Sources of History.
Give answer according to your understanding.
A period of 1,000 years.
Explanation: The current millennium began in 2001 and will end in 3000.
For more please visit here:
https://www.tiwariacademy.com/ncert-solutions-class-6-social-science-chapter-4/