Quick answers first, details follow:
Answer #1: five
Answer #2: The Middle East
Detail regarding question #1: The ancient Hebrew Bible began with the "Torah," that is, "The Law," which was given through the leader of Israel, Moses. The five books attributed to Moses, referred to collectively as "The Torah," are Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. Most of us are familiar with the Ten Commandments as given to Israel through Moses. Those commandments were first recorded in the Book of Exodus, and were repeated in the Book of Deuteronomy. ("Deuteronomy" means "second giving of the law.")
Detail regarding question #2: Bronze Age developments in metallurgy are traced back as far as approximately 3000 BC in the region between the Tigris and Euphrates rivers in what is today called the Middle East. There also were developments of metallurgy in Africa, which came at a later date. Bantu-speaking peoples migrated from Western Africa (in the area of modern Nigeria) throughout southern parts of Africa starting around 1000 BC and continuing to the 1500s (or perhaps a bit later, by some accounts). The Bantu developed metallurgy practices that they brought with them throughout the regions where they migrated. There is some debate among historians as to whether iron metallurgy in Africa arose independently or was learned or borrowed from the Middle East.
