Over 25 million Italians have emigrated between 1861 and 1960 with a migration boom between 1871 and 1915 when over 13,5 million emigrants left the country for European and overseas destinations.
The apostille is basically a certification of a legal document for international use. The translation can't be apostilled as it is not a legal document.
Just to add to what Debbie, said: Most people make a photocopy of their documents and then send the originals off for the apostilles. In the meantime, you can be working on the translations from the photocopies.