history questions

In a country like Singapore which is multi-religious, what are the possible challenges we might face? How can we overcome these challenges?
there will be fights within the different people of the religions leaving together as the people have different beliefs and will not be able to arive at a solution when there is a problem.
How was religions and philosophies important to the people of the ancient civilisations?
the religions and philosophies teach the people ways to live their live.