Why does James' search for his family background end at the synagogue in Suffolk?

James' search for his family background culminates at the synagogue in Suffolk because it symbolizes a crucial connection to his Jewish heritage and roots. The synagogue represents a physical space where his family's history and traditions are deeply intertwined, providing him with a sense of belonging and identity. Additionally, it serves as a place for reflection and understanding of his family's past, ultimately leading him to confront and embrace his heritage.