Complex sentence: Speirs was born in Edinburgh, Scotland in 1920 and spent his first few years there until he emigrated with his family to the United States, arriving in Boston, Massachusetts on 25 December 1924.
Split into simpler sentences: Speirs was born in Edinburgh, Scotland in 1920 and spent his first few years there. He immigrated with his family to the United States, arriving in Boston, Massachusetts on 25 December 1924.