pull together (v.)

• affiliate
• ally
• amalgamate
• associate
• band
• coact
• coalesce
• collaborate
• collude
• combine
• concert
• concord
• concur
• confederate
• consolidate
• conspire
• cooperate
• federate
• fuse
• harmonize
• join
• league
• merge
• partner
• reciprocate
• unite