Concept:
Roman civilization is famous for law, government, engineering, roads, aqueducts, arches, and administrative systems.
Step 1: Check statement A.
Romans made important contributions to laws and government.
So, statement A is correct.
Step 2: Check statement B.
Roman law was classified into different categories such as civil law, law of peoples, and natural law.
So, statement B is correct.
Step 3: Check statement C.
Roman aqueducts are famous examples of engineering.
Aqueducts near Nimes in France are associated with Roman engineering.
So, statement C is correct.
Step 4: Check statements D and E.
Pagodas are associated mainly with Asian religious architecture, not Roman civilization.
Pharaohs are associated with Egyptian civilization, not Roman civilization.
So, statements D and E are incorrect.
Therefore, the correct statements are:
\[
A,\ B,\ C
\]
Hence, the correct answer is:
\[
\boxed{\text{(C) A, B and C only}}
\]