Compare the trade route maps. Old Trade Routes

A map titled Pre-Columbian Exchange Trade Routes. Overland and Sea routes between Asian, Africa, and Europe are shown.

New Trade Routes

A map titled World Trade Routes, circa 1750. Sea routes between the Americas, Africa, Europe, and Asia are shown.

Based on the maps, what conclusion can be drawn about world trade during the 15th and 16th centuries?

Trade routes became global.
Trade routes were only over seas, not land.
The number of sea trade routes decreased.
The number of overland trade routes increased.