This appears to be a Asimina triloba AKA Paw Paw Tree in the US and Canada. (Not to be confused with a Carica papaya called a Pawpaw Tree in Australia.) A.triloba is native to Eastern US and the very southern tip of Ontario, Canada. It is a fruit bearing tree. The fruit is often compared to the taste & texture of a banana. It is not a commercial crop, because the fruit lacks any substantial shelf life.
It is small deciduous tree reaching on average 10 m (33') tall. It spreads predominately by suckers. It has a low fertility rate. The spring blooming flowers have faint rotting meat smell that only attracts a few insects. If the smell was stronger it would probably attract more pollinators. Each tree may produce many flowers, but only a few fruit. It can be hand pollinated if you want more fruit.
It prefers fertile soil. A topdressing yearly of compost, leaf mold or both will be beneficial to the tree. It is often found in lowlands at the edge of the forest with trees like Cornus florida or Cercis canadensis. Supplemental watering maybe required during dry spells.