Okay, so A is right, Aphrodite is the goddess of beauty and love. For B, Pericles, he is a person, and not a god. Ares, C, is correct (I don't know about the violent part-he is known to be violent in war, though). Athena is the goddess of <span>wisdom, courage, inspiration, civilization, law and justice, strategic war, mathematics, strength, strategy, the arts/crafts, and skill. She is also the goddess of peace, so D is also correct.
A, C Not sure about pericles, but I'm sure that he wasn't the god of cities. Athena was the goddess of strategy and learning, and so was definitely not the goddess of peace.
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.