International by nature, the scientific collaborations working for the Large Hadron Collider (LHC) at CERN, as well as other experiments count a small presence of emerging and developing countries. After exposing the metrics of country classification, the cases of the ATLAS and CMS Experiments will be presented, along with a brief mention of the DUNE Collaboration. Several initiatives and programmes are key game changers to grow the starting efforts. The talk gives as conclusions several recommendations on how – at both institutional and individual levels – the current landscape can be changed. More diversity and inclusion are assets in scientific endeavours, and for people from the developing world, this means nothing more than life-changing opportunities.