Ireland and England
The ocean between England and America is the Atlantic Ocean
Nope - the only way to get to Ireland from England - is by either plane or ferry.
The Atlantic Ocean is between England and Denmark. This area of the Atlantic Ocean is also the North Sea.
The Irish Sea separates the islands of Ireland and Great Britain. It is connected to the Celtic Sea in the south by St George's Channel, and to the Atlantic Ocean in the north by the North Channel.
Ireland
The Atlantic Ocean.
The Atlantic Ocean
The only way to transport between Ireland and England in 1800 was by boats and ships.
The Battle of the Boyne was not between Ireland and England. It was between the supporters of William of Orange and King James. The supporters of William or Orange won.
The Irish sea
only if you are going to Northern Ireland, you need a passport to travel between England and Ireland.