In the river and country analogy "Ganga : India :: Nile : ____", which country correctly completes the pair?

Introduction / Context:
This analogy question tests basic world geography, specifically your knowledge of important rivers and the countries through which they primarily flow or with which they are most strongly associated. The pair "Ganga : India" represents a relationship between a famous river and the country that is most closely linked with it in examinations and general studies. You must extend the same type of relationship to the river Nile and select the correct country from the options.

Given Data / Assumptions:

• The first pair given is "Ganga : India".
• The second incomplete pair is "Nile : ____".
• Options include several different countries.
• We use standard school level geography where each major river is linked with one key country.

Concept / Approach:
The Ganga, also called the Ganges, is the most famous and sacred river of India. In many general knowledge questions, Ganga is directly associated with India, even though it also flows through Bangladesh. In the same way, the Nile is one of the longest rivers in the world and is historically associated with the civilisation of ancient Egypt and with modern Egypt. Therefore, we look for the country most classically linked with the Nile, which is Egypt.

Step-by-Step Solution:

Step 1: Understand the first pair. The river Ganga is primarily associated with India in exam questions. Step 2: Recognise the pattern as "important river : country most strongly associated with that river". Step 3: Recall the Nile. It flows through several African countries but has a deep historical link with Egypt. Step 4: Among the options, identify Egypt as the country where the Nile delta and many famous Nile related sites exist. Step 5: Conclude that the correct completion is "Nile : Egypt".

Verification / Alternative check:
Pakistan is mainly associated with rivers like Indus and Jhelum. The United States of America is known for rivers such as Mississippi and Missouri. The United Kingdom has rivers like Thames and Severn. Sudan also lies along the Nile, but in standard exam level analogies, the name most strongly tied to Nile is Egypt due to the long standing historical and cultural connection. Hence, Egypt fits the pattern exactly in the same way that India fits with Ganga.

Why Other Options Are Wrong:
Pakistan, United States of America and United Kingdom are not classically introduced in textbooks as the home of the Nile. Sudan does share the Nile, but when one hears the phrase "River Nile", the first country that comes to mind in history and geography is Egypt. Therefore, only Egypt mirrors the strong link that India has with the Ganga in the first pair.

Common Pitfalls:
A common mistake is to overthink the fact that Nile flows through multiple countries and become confused between them. In reasoning questions, you should focus on the most standard and widely taught association. Another pitfall is not identifying that the first pair already uses that same idea of a single strong association rather than a complete list of river basin countries.

Final Answer:
The analogy is completed as "Ganga : India :: Nile : Egypt".