修好 しゅうこう通商 つうしょう航海 こうかい条約 じょうやくでしょう
shūkōtsūshōkōkaijōyakudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 修好通商航海条約

1. Probably a treaty regarding reconciliation, trade, and navigation.

Polite
Presumptive
Conjecture