"Allegiance" refers to a strong loyalty and support towards someone or something. It means being committed and devoted to a person, group, country, or cause. Full definition
I find that I can make a more compelling argument against the pledge of allegiance if I base that argument on political beliefs as opposed to my religious beliefs. (redeeminggod.com)
Just a simple goodwill message can go a long way to make a customer pledge allegiance to your business. (profitableventure.com)
Individuals and groups that can be «bought» are likely to switch allegiance again. (educationnext.org)