If you mean what two countries were the first to claim the land that we know of as Oregon, they were Great Britain and Spain. However, the Spanish claim was taken over by the United States. Russia and France also had claims to the territory, which they eventually dropped.
The short form of Oregon is OR. All the states in the United States have an abbreviation which is used as the short form.
oregon
democratic
Not all adjectives have a verb form; in this case the closest you can come is be accurate.
more accurate, most accurate.
Oregon AND Arizona
no
No. accurate is an adjective. The noun form is accuracy.
22/7 is fairly accurate to 2 decimal places: 3.14 and it the most commonly used one. 333/106 is accurate to the first 4 decimal places: 3.1415 355/113 is accurate to the first 6 decimal places: 3.141592
Oregon
Wagons pulled by horses and cattle
portland oregon flying to south africa .how many hours on the plane?