 
<translate> Yi amfani da rafi na sani don amsa wadannan. Bautar bautar ta bayyana a cikin Amurka a cikin 1620s kuma ya kasance a cikin amfani har zuwa 1917. Dalilin da ya sa ya ragu shi ne yanki mai rikitarwa a tarihin tattalin arziki.  Amsa wannan tambaya bisa ga nassi: yaushe ne bautar da aka yi a Amurka ta ƙare? <eng> Use stream of consciousness to answer the following. Indentured servitude appeared in the Americas in the 1620s and remained in use as late as 1917. The causes behind its decline are a contentious domain in economic history.

Answer this question based on the passage: when did indentured servitude end in the us? 