The Second Peace of Thorn (1466) split Prussia into the western Royal Prussia, a province of Poland, and the eastern part, from 1525 called the Duchy of Prussia, a fief of the Crown of Poland up to 1657.
You can check to see if your computer supports Bluetooth: 1  Look for the Bluetooth icon in the menu bar. 2  Choose System Preferences from the Apple menu, then click Bluetooth. 3  From the Apple menu, choose About this Mac, then click More Info.
Most Mac computers come with Bluetooth technology built-in. To see whether your computer supports Bluetooth, do one of the following: Look for the Bluetooth icon in the menu bar. If the Bluetooth icon is present, your computer has Bluetooth.