The pyramids of Egypt have exerted a powerful hold on the world since explorers first began to explore this ancient land.
Since explorers first began to explore this ancient land, the pyramids of Egypt have exerted a powerful hold on the world.
mnli hypothesis: Since explorers first began to explore this ancient land, the pyramids of Egypt have exerted a powerful hold on the world. premise: The pyramids of Egypt have exerted a powerful hold on the world since explorers first began to explore this ancient land.