There is a general belief that by marrying a national of a country a person instantly becomes a citizen of that country -- this is a myth, the truth is that only one country (as of June 2015) will automatically grant citizenship by marriage, and that is Iran, and then only to foreign women who marry Iranian Muslim men. In most countries, marriage does not automatically grant citizenship, but it can make acquiring it easier.
In all situations the applicant must meet residency requirements (from 2 to 5 years) and criminal background checks; most countries will do a background check into the marriage itself, to ensure its authenticity.
For example, Canada will send a consular official to visit the applicant’s home to ascertain details of how the relationship was established and view documents such as photos, e-mails, letters, gifts, etc.
Obtaining citizenship through marriage is not a simple or easy process, but at Amicus we have the experience and expertise to successfully guide you through the process from start to finish.