There is no exact date; it was developed over a period of several years, to be first released in 1972.
Direction, exact or otherwise, is not a property of language.
The Hebrew language did not develop in any modern country, but if you are asking what the modern names are for where the ancient language developed, it's not possible to be exact but it's safe to say that it developed in Israel, Jordan, Lebanon, Syria, and Egypt, as well as the Palestinian Authority.
Singapore Sign Language (SgSL) is the sign language used in Singapore, though it has no official recognition.SgSL is not fully standardized and is influenced by Shanghainese Sign Language, American Sign Language, Signing Exact English (SEE-II) and locally developed signs.
The Flute was developed before written language, so we do not have an exact record. The earliest known flute was found in Slovenia and dates to 41,000 BC. A later flute was discovered in Germany, which dates to only a few thousand years later.
The exact amount that Dennis and Callahan make is not available to the public. It has been rumored that they made upwards of 500,000 per year.
The exact location of the first developed language is unknown, as it predates written history. However, researchers believe that language likely originated in Africa tens of thousands of years ago and then spread to other regions of the world as humans migrated.
According to Roget's, there is no antonym, exact opposite, for language. If it doesn't have to be exact, you might try silence or preverbal or illiterate.
All languages are completely developed, but the exact number of them is unknown.
It is difficult to determine the exact year when language first appeared, as it likely developed gradually over a long period of time. However, it is believed that Homo sapiens, our species, began to develop communication skills and language abilities around 100,000 to 200,000 years ago.
The Sumerians were the first to create the first writing system. The exact person, I have no idea.
I do not know an exact date but it ended when the cannon was developed.
Noone knows. its an art that just developed.