kooperieren, zusammenarbeiten, sich zusammenschließen, kollaborieren, eine Partnerschaft eingehen, sich verbünden, kooperatives Vorgehen
in alliance with - in league with - in partnership with - in conjunction with - together with - allied with
The phrase "in confederation with" describes a formal or semi-formal relationship in which two or more parties join together for a shared purpose while maintaining their own independence. It is often used for states, organizations, or groups that coordinate policies, defense, or activities without forming a single unified entity. The cooperation is usually based on an agreement, treaty, or charter that defines rights and obligations. Compared to a full union, a confederation typically grants more autonomy to its members. The expression is used in political, legal, and organizational contexts to stress collaborative action on a confederated basis.