In what era did the development of polyphony begin to emerge

Polyphony is defined as the style of simultaneously combining a number of parts, each forming an individual melody and harmonizing with each other.

The development of polyphony began to emerge in the Romanesque era. The earliest type of polyphony was organum or the earliest harmonization of the chant.

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it created free trade throughout the colonial territories.

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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