Sounds that are not included in one's native language first begin to disappear from use during the stage of language development.

Babbling

At around 3-4 months, children start the babbling period, which is characterized by the production of sounds that approach the sounds of adult speech and whose frequency is maximum between 9 and 12 months. During this period, the sounds produced already have an upward and downward intonation pattern, however they are not intelligible until seven or eight months, when parents begin to identify babbling with requests, hunger, surprise, etc.

The role of this period in the acquisition process is not clear; according to Menyuk (1970, p.79) the purposes of babbling are "to explore the possibilities of the vocal mechanism, to feel pleasure in the vocal performance, to learn to control the output of the mechanism and thus, to repeat certain sequences. In a later stage, babbling has the function of drawing the parents' attention and communicating the child's emotional state.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.

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