Title: Wayback Machine.
Question: When was an upgrade of the Wayback Machine released for testing?

Title: Josip Broz Tito.
Question: Who wrote a book about Tito questioning his true origin?

Title: Ottoman Empire.
Question: Under Sultan Selim I the empire swallowed what sultanate in Egypt?

Title: Printed circuit board.
Question:
What's the process by which bare copper gets covered in solder?