Historians have approached the Indian Ocean from a variety of vantages in their attempts to explain the modern history of this huge maritime arena. Some scholars have concentrated on predation as a linking theme, charting how piracy connected a broad range of actors for centuries in these dangerous waters. Others have focused on environmental issues, asking how patterns of winds, currents, and weather allowed trade to flourish on such a vast, oceanic scale. These latter historians have appropriated a page out of Braudel, and have grafted his approaches to the Mediterranean to fit local, Indian Ocean realities, such as the role of cyclones and mangrove swamps in both helping and hindering long-distance commerce. Still other scholars have used different tacks, following trails of commodities such as spices or precious metals, or even focusing on far-flung archaeological remains, in an attempt to piece together trans-regional histories from the detritus civilisations left behind. All of these epistemological vectors have shed light on the region as a whole, though through different tools and lenses, and via a variety of techniques of inquiry.