The biggest difference between today's food and that of the Middle Ages is that we have a number of crops came from the New World and were unknown to medieval European people. These crops include potatoes, tomatoes, pumpkins and similar squash, such New World beans as kidney beans, American corn (maize). Medieval people also did not have turkeys, for the same reason, but they did eat swans and peacocks.
There is nothing different between todays castles and medieval time castles. Today's castles were built in medieval times.
Infrastructure:Running WaterSewersElectricityGasRules and regulationsTrash pickupPoliceFire DepartmentsHealth Regulations
Physical geography is essentially unchanged from medieval times to today. Political geography, of course, has changed beyond all recognition. Few political entities of medieval times have even survived to today, and those that have have mostly very different borders or internal boundaries.
nomads are people that live today since the medieval erea
There were many different languages in medieval Europe, as there are today, and many different words for "hospital."
medieval life is different cause now we have a electricity and they dont apithan
The rivers that existed in medieval times are still here today.
Leaders or rulers of countries. Monarchs today have far less power generally, than they did in medieval times.
Same thing as it does today
They put on shows, just as they do today.
we eat chicken
Yes pneumonia was deadly in medieval times as most diseases were because there werent any antibiotics back then as there are today.