Their organs.
nothing
Presumably to remind us that they were there at one time in the past.
Roads and aqueducts were abandoned in France and remained in use for years after the Romans left.
Written accounts, specifically Pliny the Younger
The Romans left roads because they wanted the roads so that they can get to other places of Britain easier and quicker.
Toilets or latrines were part of the infrastructure of the houses and public buildings. There was no way they could be removed.
no
The past tense of "leave behind" is "left behind."
in india what does the water leave behind
jgibnnigignni
What Leave Behind was created in 2003-05.
what kind of artifacts leave behind