Here is the completely updated `question.php`. I added the missing `$breadcrumbs` array and defined `$category_name` and `$topic_name` right before the header is included. This ensures that `header.php` generates the correct Breadcrumb Schema, page title, and meta description for single question pages. Replace your entire `question.php` with this: ```php Mesopotamia Questions
Q. Mesopotamia is located between which two rivers?
Tigris and Euphrates
Yellow and Yangtze
Nile and Congo
Indus and Ganges

Explanation:

Mesopotamia means 'land between rivers' — the Tigris and Euphrates.

Q. The world's first civilization emerged in:
India
Egypt
Sumer
China

Explanation:

Sumer, in southern Mesopotamia, is considered the world's first civilization (c. 4500–1900 BCE).

Q. The Sumerians invented which writing system?
Hieroglyphics
Cuneiform
Linear B
Sanskrit

Explanation:

The Sumerians developed cuneiform (c. 3400 BCE), one of the earliest writing systems.

Q. Cuneiform was written on:
Palm leaves
Clay tablets
Papyrus
Animal skins

Explanation:

Cuneiform was pressed into clay tablets using a reed stylus.

Q. The Epic of Gilgamesh is from:
Egypt
India
Sumer/Mesopotamia
Greece

Explanation:

The Epic of Gilgamesh is a Sumerian poem, one of the oldest literary works.

Q. The Code of Hammurabi is associated with which city?
Uruk
Nineveh
Babylon
Ur

Explanation:

Hammurabi ruled Babylon (c. 1792–1750 BCE) and issued his famous law code.

Q. Hammurabi's Code is notable for:
Being written on papyrus
Banning slavery
Being oral only
Being one of the earliest written law codes

Explanation:

Hammurabi's Code (c. 1754 BCE) is one of the earliest and most complete written legal codes.

Q. The ziggurat was a:
Military fort
Stepped temple-tower
Royal palace
Marketplace

Explanation:

A ziggurat was a massive stepped temple-tower in Mesopotamian cities.

Q. The Babylonians are credited with the:
Binary system
Base-60 number system
Roman numerals
Decimal system

Explanation:

Babylonians developed the 60-minute hour and 360-degree circle from their base-60 system.

Q. The Assyrian capital was:
Babylon
Uruk
Ur
Nineveh

Explanation:

Nineveh was the Assyrian capital under kings like Sennacherib.

Q. The Hanging Gardens of Babylon are one of the:
Seven Wonders of the Ancient World
Six Dynasties
Twelve Labors of Hercules
Eight Immortals

Explanation:

The Hanging Gardens are one of the Seven Wonders of the Ancient World.

Q. The Akkadian Empire was founded by:
Nebuchadnezzar
Gilgamesh
Sargon of Akkad
Hammurabi

Explanation:

Sargon of Akkad founded the Akkadian Empire (c. 2334 BCE), often considered the first empire.

Q. The Neo-Babylonian king who rebuilt Babylon was:
Ashurbanipal
Sargon
Nebuchadnezzar II
Hammurabi

Explanation:

Nebuchadnezzar II (r. 605–562 BCE) rebuilt Babylon and built the Ishtar Gate.

Q. The Ishtar Gate was in which city?
Uruk
Nineveh
Ur
Babylon

Explanation:

The Ishtar Gate was the eighth gate of Babylon, built by Nebuchadnezzar II.

Q. The Sumerians developed the first:
Paper money
Iron tools
Cities and writing
Steam engines

Explanation:

Sumerians developed the first cities, writing, schools, and recorded laws.

Q. The wheel is believed to have been invented in:
Egypt
Mesopotamia
Greece
China

Explanation:

The wheel was invented in Mesopotamia (Sumer) around 3500 BCE.

Q. The Sumerian city of Ur is located in modern:
Syria
Turkey
Iraq
Iran

Explanation:

Ur is in modern-day Iraq, near Nasiriyah.

Q. The Epic of Gilgamesh includes a story of a great:
Famine
Flood
Battle
Plague

Explanation:

The Epic of Gilgamesh includes a flood narrative similar to the biblical story of Noah.

Q. The Sumerians worshipped many gods, making them:
Atheistic
Pantheistic
Polytheistic
Monotheistic

Explanation:

Mesopotamians were polytheistic, worshipping many gods like Enlil, Enki, and Inanna.

Q. The Assyrians were known for:
Building pyramids
Peaceful trade only
Inventing writing
Military might and the library of Nineveh

Explanation:

The Assyrians were known for military might and establishing one of the first libraries at Nineveh.

Q. The Royal Library of Ashurbanipal was at:
Uruk
Babylon
Ur
Nineveh

Explanation:

Ashurbanipal's library at Nineveh held thousands of cuneiform tablets, including the Epic of Gilgamesh.

Q. Mesopotamian temples were managed by:
Farmers
Kings only
Merchants only
Priests

Explanation:

Priests managed temples, which owned land and controlled redistribution of goods.

Q. Which Mesopotamian civilization is known as the world's first empire?
Akkadian
Assyrian
Babylonian
Sumerian

Explanation:

The Akkadian Empire under Sargon (c. 2334 BCE) is often considered the first empire.

Q. The Sumerians built irrigation systems to control:
Locusts
Wind
Earthquakes
Floods and water supply

Explanation:

Sumerians built canals and levees to control the unpredictable Tigris and Euphrates floods.

Q. The last major Mesopotamian empire before Persia was:
Neo-Babylonian
Assyrian
Sumerian
Akkadian

Explanation:

The Neo-Babylonian Empire fell to Cyrus the Great of Persia in 539 BCE.

```