Are there universal characteristics of belief systems that are common across all cultures? What are they and how can they bring us together?

This is a fact that we humans are intelligent, rational and social in nature. Human cultures were founded on their belief systems. With cultural evolution old beliefs have been reformed moreover new beliefs have been recognized. However characteristics of all beliefs remained more or less the same. All belief systems share same features like existence of God (or gods), life after death, worship of God (or gods) and societal principles like compassion, patience and forgiveness. All such social moralities are rational and get compliment by human nature. People easily accept such teachings in contrast to teachings of hatred and conflicts.
In pursuance to develop togetherness among different faiths, people must obey their instinct in addition to religious ethics. Because these two elements are leading commonalities of different cultures. These cultural commonalities promote harmony, which give birth to spirituality. Spirituality exists in all belief systems and serves a vital role to spread doctrines of mercy, acceptance and coexistence.
In fact societies based on compassion are often multicultural. In comparison to radical extremist societies, multicultural societies or countries have less conflicts and more progress.