Dealing with non-Muslims

Q: Are we allowed to make dua for non Muslims? For example, when speaking to nurses/cashiers and if they did us a favour can we say God bless you?

Q: Recent events in Palestine makes us very disturbed as Muslims and human beings. What I have noticed is that not only Muslims around the world but also non-muslims are expressing solidarity and extending their support for Palestine. I would like to ask this question with genuine concern and I hope I do not offend you if I ask.

Should we not treat non Muslims in our lands with fairness and kindness, as we expect them to treat us fairly. In my own country of origin Pakistan, persecution of certain non Muslim groups like Ahmadiyas, Atheists, Hindus, etc. occurs in various form on frequent basis. Are we as Muslims allowed to stand up in support for these non Muslims communities like Ahmadis, Atheists, Hindus, etc. if they are oppressed by our own Muslim brethren?

Q: Is it correct to say that we should hate the kuffar (even those who don't oppress us) since they are enemies of Allah Ta'alaa, and our enemy, like how it comes in Quran, that the kuffar are open enemies to the Muslims?

Q: Can a Muslim woman share her left over food items with her Hindu neighbour?

Q: Is it permissible to give a translation of the Quraan to a non-Muslim who is interested in Islam, even though he cannot be assumed to be in the state of wudhu?

Q: At work with non-Muslims, my colleagues wanted to eat with me and I volunteered to buy the food. They asked me if it is ok if they get pepperoni pizza and I said it is fine. Later I asked them to just go ahead and order so I would not pay for their haraam food.

Since I first said “it was fine” is that kufr because I was too weak to explain to them that I don’t buy haraam food? I feel like I need to redo my Nikah and Hajj.

Q:

1. What is the ruling on a woman going to visit her non-Muslim maternal auntys house?

2. Are non-Muslim relatives automatically non-mahram?

3. How should a Muslim woman's conduct and behaviour be to one's non-Muslim relatives?

Q: I had a close non-Muslim friend. He helped me in all my difficult situations and helped me to grow in all possible ways. Now he is no more. How can I support him for his hereafter world? 

Q: Is it allowed for Muslims to live with non-Muslims in the same house?

Q: I want to know if a Muslim and Christian family can live together in one house?

Example: The Muslim family lives in one portion of the house and the Christian family lives in the other portion of the house. Is this allowed in Islam?