Formal solicitation for project bids.

Since 1867, the United States has considered, or made, several proposals to purchase the island of Greenland from Denmark, as it did with the Danish West Indies in 1917.

There were several proposals for a Jewish state in the course of Jewish history between the destruction of ancient Israel and the founding of the modern State of Israel.

Since the 19th century, there have been proposals for the creation or incorporation of new states of Australia.