The development of New Orleans was hindered historically because of it's geographical position. It is surrounded by the Bayou, rivers, higher ground, and all this made it more difficult for things to develop in times where technology was not as developed.
I believe the answer is one mile =1,760 yards
Y=4 and x=6 to find the answers you make the equations equal to each other so you would do 4x-7=2x+5 and 5y-6=y+10 and you would solve
I suppose your question is which of these countries have a coastline?
Andorra - no
Austria - no
Germany - yes
Greece - yes
Portugal - yes
Sweden - yes
Switzerland - no
The Netherlands - yes