So here it is... the long awaited answers^&grin^&grin....
This was kind of a trick question: all of the scenarios actually happened, in the following capacities:
Russia > India (During the Crimean War, Russia planned, and failed, to invade India through Afghanistan.)
France > India (During the Egyptian Campaign, Napoleon planned, and failed to invade India after he defeated the Ottomans.)
France > Ireland (During the Napoleonic Wars, the French sent troops to help the Irish rebel, and manage to set up an independent state for a short while.)
USA > Canada (During the A.W.I., and the War of 1812, the U.S. invaded British held Canada.)
Japan > Russia (Look up the Russo-Japanese war.)
England > Denmark (During the Napoleonic Wars, the British twice invaded Denmark to stop the Danish fleet from falling into French hands.)
Ireland > Scotland (E.C.W.)
England > Iceland (England "invaded" Iceland's waters during the many "Cod Wars".)
England > Washington State (The British and AMericans faced off over the death of a pig on San Juan Island, and involved both Picket and Roberts, in the little-known "Pig Wars".)
:salute:::salute::
-Sandor