The Ahoms entered Assam through______.
A: Diphu Pass
B: Patkai Pass
C: Phungan Pass
D: None

Hint: The Ahom is an ethnic tribe from Assam and Arunachal Pradesh. They are intermixed descendents of the Tai people who entered the Brahmaputra valley of Assam in 1228.

Complete Step by Step Answer:

Option A: Diphu Pass lies on the McMohan Line. It is a mountainous pass around the area of the tripoint borders of India, China and Myanmar. Diphu Pass is strategic for Eastern Arunachal Pradesh. Ahoms did not enter Assam through this Pass. This is the incorrect answer.

Option B: Patkai Pass lies on the peak of patkai hills on the Indo-Myanmar border. Patkai hills are located on the North Eastern border with Burma. This is the nearest Pass to Assam. Ahoms entered the Brahmaputra valley through the Patkai Pass because conditions were favorable for them to enter Assam through this Pass. Clearly, This is the correct answer.

Option C: Phungan Pass (Hpungan Pass) is located in the Changlang District of Arunachal Pradesh. Ahoms did not enter Assam through this Pass. This is the incorrect option.

Option D: None- Ahoms entered Assam through Patkai Pass which is given as one of the options. Hence none can not be the correct answer.

The correct answer is option B as Ahoms entered Assam through Patkai Pass as it is nearest to Assam.

Note: It is important not to get confused among these passes as they are located around Assam and Arunachal Pradesh. Patkai Pass is also known as Pangsau Pass which is located in Patkai range hills. Hence remember both the names.