During World War II, Hitler planned to ship 4 million Jews to Madagascar. It took Nazi German's defeat via Battle of Britain to shelved the plan. Here's a translated memo of 15-8-1940 from the office of Adolf Eichmann—major organiser of the Holocaust—titled "Madagascar Project"
Full write-up coming soon — this page currently shows the original post as archived.
Also posted 2 more times between 2018 and 2020.