The statements would imply that they are characteristics of a political recovery in the fifteenth century in Europe except b. centralized monarchies would gain strength in Germanic Central Europe. Hope this is the right answer and would be of help.
The name of the device is the <span>Fessenden oscillator. It was made to allow submarines to communicate through Morse code. This way they could avoid communication being intercepted.</span>
The Battle of Britain, which was a major aerial offensive by Germany against Great Britain. Its aftermath demonstrated the weakness of the German aerial warfare machine, which was unsuccessful in defeating the British or forcing surrender. The Royal Air Force was successful in defending Great Britain.
