The phrase "greater unity" means coming together and working as a team or a group towards a common goal or purpose. It highlights the idea of unity becoming stronger or more powerful when more people or entities are involved. Full definition
«What I feel is great team spirit and great unity in the dressing room, and a focus to go forward, that's for sure,» he said. (justarsenal.com)
Taking time to get to know and care for the people you lead brings about greater unity. (entrepreneur.com)
Skills do improve with practice and patience, and as skills improve and a feeling of greater unity develops, sex can become increasingly satisfying. (religion-online.org)