Final answer:
The 2019 film is 'Us', a psychological horror film directed by Jordan Peele that stars Lupita Nyong'o in a dual role.
Step-by-step explanation:
The 2019 film featuring the event Hands Across America and starring Lupita Nyong'o in a dual role is 'Us', directed by Jordan Peele.
The film explores tensions that arise as her characters negotiate an identity grounded in both Africa and America, creating a complex narrative about duality and division. 'Us' is a psychological horror film that delves into the concept of the 'shadow self' and is noted for its social commentary and use of symbolism.