Simplify the following text for a Grade 10 native English-speaking person.
Original: In Britain , Ireland , and many Commonwealth nations , the qualifying medical degree is instead the Bachelor of Medicine , Bachelor of Surgery ( MBBS , BMBS , BM BCh , BM , MB BCh BAO , or MBChB ) and is considered equivalent to the M.D. degree in the U.S. system .
Simplified: In Britain , Ireland , and many Commonwealth nations , the qualifying medical degree is the Bachelor of Science in Medicine , Bachelor of Medicine , Bachelor of Surgery ( MBBS , BMBS , BM BCh , BM , MB BCh BAO , or MBChB ) and is the same as the M.D. degree in the U.S. system .