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?
Indus and Ganges
Yellow and Yangtze
Tigris and Euphrates
Nile and Congo

Explanation:

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

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

Explanation:

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

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

Explanation:

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

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

Explanation:

Cuneiform was pressed into clay tablets using a reed stylus.

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

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 one of the earliest written law codes
Banning slavery
Being written on papyrus
Being oral only

Explanation:

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

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

Explanation:

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

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

Explanation:

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

Q. The Assyrian capital was:
Ur
Nineveh
Babylon
Uruk

Explanation:

Nineveh was the Assyrian capital under kings like Sennacherib.

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

Explanation:

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

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

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
Babylon
Ur
Nineveh

Explanation:

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

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

Explanation:

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

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

Explanation:

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

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

Explanation:

Ur is in modern-day Iraq, near Nasiriyah.

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

Explanation:

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

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

Explanation:

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

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

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
Ur
Nineveh
Babylon

Explanation:

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

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

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:
Wind
Floods and water supply
Earthquakes
Locusts

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
Akkadian
Sumerian
Assyrian

Explanation:

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

```