How long has interest in flying in the skies existed?

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Around 400 BC - China

Explanation:

The discovery of the kite that could fly in the air by the Chinese started humans thinking about flying. Kites were used by the Chinese in religious ceremonies. They built many colorful kites for fun, also. More sophisticated kites were used to test weather conditions. Kites have been important to the invention of flight as they were the forerunner to balloons and gliders.

explanation:

it was dumb and stupid town

answer; inductive techniques;