My girlfriend is writing up this huge essay on Cicero's influence in the roman senate, and she needs help with a couple of questions. I thought i'd post a thread here asking for help since i know TWC has it's wonderful share of people knowledgeable on roman history

If anyone could give answers, and most importantly sources, on the following questions, it would be a great help:

Examples of Cicero's influence?

What role did Cicero play in the Catiline conspiracy and its aftermath?

What was the relationship between Gnaeus Pompey Magnus and Cicero?

What did the senate do in reply to Cicero's Phillipicae speeches against Antony?

Thank you all in advance!