What does the term "ally with" describe?

The term "ally with" describes the act of coming together or forming a partnership with a group or government, which aligns with the chosen answer. This phrase implies collaboration and support, suggesting that the parties involved work together towards common goals or interests. In various contexts, such as politics or social movements, forming alliances is vital for achieving objectives, influencing decisions, or creating a united front.

The other options describe different actions that are not synonymous with "ally with." For example, separating from a union denotes a withdrawal or disconnection rather than a partnership. Opposing a regime suggests a confrontational stance, indicating a lack of collaboration. Negotiating terms involves discussions to reach an agreement, which may or may not involve forming an alliance. Thus, "ally with" specifically emphasizes joining forces rather than the other actions described.