In both cases, the tree-reconstruction tools may use data from your tree, your match’s tree and other trees, as well as historical records.
In both cases, the tree-reconstruction tools may use data from your tree, your match’s tree and other trees, as well as historical records. MyHeritage also pulls tree data from the global trees at FamilySearch and Geni. On both sites, you can explore the records or tree evidence that support tree-reconstructions so you can verify them yourself.