ukase, edict
A dummy official order which is not be recorded; it is a letter like warning letter before take a serious action.
To promulgate means to officially announce or make known a new law, regulation, or decree by publishing it or declaring it publicly. It involves the formal proclamation of a rule or order to ensure that it is widely understood and followed.
Decree
The Emancipation Proclamation. Although the 13th Amendment made it all 100% official.
command
An official public proclamation or order is a formal announcement issued by a government authority or organization that communicates important information or directives to the public. It often addresses matters of law, policy, or significant events and is intended to inform citizens, guide behavior, or announce changes in regulations. Proclamations can cover various topics, including public health, safety, or celebrations, and they are typically made through official channels to ensure widespread dissemination.
An official declaration by an emperor could be termed an "edict" or "pronouncement." The specific declarations will vary depending on which emperor it was and the time period in which it was given.
The Emancipation Proclamation
Unity, amity, order, union
Its real official name is " REPÚBLICA DE HONDURAS " (meaning "Republic of Depths"). In Spanish one does not use commonly an accent mark/signal in capital letter; I did, just in order to show the correct proper name of the country of the question.
to win the war
King George III