Predominance (noun)

1. Superiority or ascendancy over others of the same kind.
2. The extent or degree to which one thing is more prevalent or important than others.

Origin:

Late 16th century from french prédominance or latin predominantia, from predominant- "having the power to rule", from the verb dominari (see dominate).

Examples:

1. The predominant colour of the room was blue.
2. Their predominant method of communication was through email.
3. Money has a predominant influence in today's society.
4. English has become the predominant language of business worldwide.
5. The predominant theme of the movie was love and loss.