Across the earth, there have been several
regions called "cultural hearths". These are regions where
an agriculturally-based economy was created.
Examples
of the world's cultural hearths are the Huang-Ho River in China, Mesopotamia
(the area between the Tigris and Euphrates Rivers) in Iraq, The Aztecs
in Mexico, and Ancient Egypt.
Another of these cultural hearths emerged in South Asia,
although it was unknown until the early part of the twentieth century
that this civilization even existed.
As British engineers were overseeing the construction
of a railroad through what is now the Indus Valley of Pakistan, railroad
workers discovered bricks that were the remains of a large city. The
age of these bricks proved to be much older than their original estimates.
This city became known as Mohenjo Daro, and soon another city was found
at Harappa. Because of this, this civilization became known as the Harappan
Civilization. There are now many different names for it. It is also
called the Indus Valley Civilization, because the settlements were clustered
around the Indus River and its many tributaries.
One
of the largest controversies among scholars on South Asia are the theories
of the Aryan migration into the Indian subcontinent.
Much of what is known about the Indus Valley Civilization
comes from Sumerian stone tablets found in Mesopotamia, a civilization
then in present-day Iraq. These tablets refer to a place called "Meluhha",
which is believed to be the Indus Valley. There was extensive trade
between the Indus Valley Civilization and Mesopotamia. Many Indus Valley
seals were found there.
Archaeologists still conduct excavations in many sites throughout
Pakistan and India. Recent findings have revealed that the Indus Valley
Civilization arose much earlier than previously thought, placing it within
a similar time period with Ancient Egypt.
Indus Script
One of the big mysteries about the Indus Valley Civilization
is their system of writing.
Among the artifacts recovered in many of the excavations
in both Pakistan and India are square-shaped objects made from a rock
called steatite. These objects are called seals. Seals, along with marks
on pottery are the most common places in which the Indus Valley writing
is found.
Scholars, however, have not been able to decipher this
writing.
Different scholars have their own theories about what
specific symbols mean, what type of language it is, and where the language
comes from.