33. Name three empires or dynasties that operated in Iran before Iran became an official state recognized by the United Nations

Direct Iranian dynasties

Achaemenid dynasty (730–329 BC) of Persian origin.

Medes (ca. ...

Orontid dynasty (570–200 BC) of Iranian origin.

Pharnacid dynasty (c. ...

Achaemenid Empire (550–330 BC) of Persian origin.

Ariarathid dynasty (331 BC–96 BC) of Iranian origin.

Atropatene (320s BC–3rd century AD) of Iranian origin.

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

those sounds of the natural world are bioacoustics, and they're more than a false-color spectrogram of data from the musiamunat conservation area.