- Ordinary Passport (Dark Blue) is issued to ordinary citizens for ordinary travel, such as for vacation, study and business trips (36 or 60 pages). It is a "Type P" passport, where P stands for Personal.
- Official Passport (White cover) is issued to individuals representing the Indian government on official business. It is a "Type S" passport, S stands for Service.
- Diplomatic Passport (Maroon cover) is issued to Indian diplomats, top ranking government officials and diplomatic couriers. It is a "Type D" passport with D stands for Diplomatic. .. Courtesy Wikipedia
The Quantitative Revolution was a major change in Geography during the 1950s and 1960s. It introduced mathematical, statistical and scientific methods to understand geographical phenomena. Before this revolution, geographers mainly described places, regions, landscapes and differences between areas. After the revolution, they increasingly used numerical data, statistical analysis, mathematical models and theories to explain why geographical patterns occur and how they may change. For example: Traditional approach: Describe the distribution of population in different regions. Quantitative approach: Use statistical methods to identify population patterns, explain the factors influencing population distribution and predict future population growth. The revolution helped establish Geography as a spatial science, focusing on the location, distribution, relati...

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