The correct answer is: Roman society was hugely militaristic, bent on territorial domination, and Greek city-states were democratic and focused on arts and culture.
One of the main differences between the Greek polis and the Roman Republic is that the Greeks had a democratic society, they were researchers, lovers of knowledge, wisdom, and beauty.
On the other hand, the Romans had an aristocratic society, they were practical and their main interest was to expand the Empire through military forces and also to enrich themselves.
Using simple words, imperialism is a policy of certain country involving a will of extending its power by using any kind of pressure or force.
For example - In 1939 Nazi Germany together with Soviet Russia jointly invaded Poland, in the result, both countries extended its borders.
The fourth one is correct
India didn't pick sides between the Soviet Union and the United States.
