The Tigris River, an important river of Western Asia, flows mainly through which of the following countries?

Introduction / Context:
The Tigris River is one of the two great rivers that historically defined the region of Mesopotamia in Western Asia. Along with the Euphrates, it supported some of the earliest human civilisations. This question checks whether you know the modern country through which the Tigris flows for much of its length, an important point in regional geography.

Given Data / Assumptions:

• The river in question is the Tigris.
• The options list Iran, Italy, Iraq, Egypt and Greece.
• We must identify the country where the Tigris is a major river flowing through its territory.
• We assume basic knowledge that the Tigris and Euphrates together drain into the Persian Gulf area.

Concept / Approach:
The Tigris rises in the mountains of Turkey and flows generally southeast. It passes along or near the border of Syria and then continues through Iraq, where it becomes a major river that flows past cities such as Mosul and Baghdad. Eventually, it joins with the Euphrates to form the Shatt al Arab, which flows into the Persian Gulf. Among the listed countries, Iraq is the one most strongly associated with the Tigris.

Step-by-Step Solution:
Step 1: Recall that the historic region of Mesopotamia means the land between the rivers, referring to the Tigris and Euphrates.Step 2: Modern Mesopotamia largely overlaps with the territory of Iraq, where both rivers flow and support major cities.Step 3: Italy, Egypt and Greece are far away from this region and do not contain the Tigris.Step 4: Iran has its own important rivers but the Tigris is not primarily identified with Iran territory, although the Shatt al Arab forms a boundary near the Gulf.Step 5: Since the Tigris flows mainly through Iraq, the correct option is Iraq.

Verification / Alternative check:
Geography maps of Western Asia show the Tigris running from southeastern Turkey into Iraq, past Baghdad, and then meeting the Euphrates. Iraq is always labelled prominently along its course. Italy, Greece and Egypt are in Europe or North Africa and have completely different river systems such as the Po, the Tiber or the Nile. These visual confirmations from maps make it clear that Iraq is the correct answer.

Why Other Options Are Wrong:
Iran is close to the region but not the main country through which the Tigris flows, so selecting it ignores the central role of Iraq in Mesopotamian geography. Italy is in southern Europe and is associated with the Tiber and Po rivers, not with the Tigris. Egypt is famous for the Nile, and Greece has rivers such as the Pinios and Aliakmonas, none of which are the Tigris. Therefore these options do not match the river in the question.

Common Pitfalls:
Some learners confuse Middle Eastern countries and may loosely associate any famous river with a nearby country like Iran. Others mix up the names of different rivers such as the Tiber of Italy and the Tigris of Western Asia because of similar spelling. To avoid mistakes, link Tigris and Euphrates firmly with ancient Mesopotamia and modern Iraq, and remember that the Tiber belongs to Italy and the Nile to Egypt.

Final Answer:
The Tigris River flows mainly through Iraq.