奴隷 どれい制度 せいど廃止 はいしじゃありませんでした
doreiseidowa ishijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 奴隷制度廃止

1. Was not abolition of slavery.; It wasn't the abolition of slavery.

Past/Perfective
Negative
Polite
Terminal Form