Complex sentence: A few years later, a group separated and started a similar organsiation under the name "Business Men's Fellowship" (BMF), which is mainly active in the US, the UK, Brasil and some Baltic countries.
Split into simpler sentences: A few years later, a group separated and started a similar organsiation under the name "Business Men's Fellowship" (BMF). The BMF is active in the US, the UK, Brasil and some Baltic countries.