Union with synonyms

What is another word for Union with?

• affiliation
• association with
• connection with
• connection to
• alliance with
• alliance to
• alignment with
• link with
• link to
• attachment to
• tie with
• tie to
• relationship with
• relationship to
• fellowship with
• partnership with
• coalition with
• amalgamation with
• incorporation into
• integration into
• federation with
• confederation with