We're the foundations of mercantilism theory sound? ? need

In short, no. Mercantalism theorized that nations could create a world economy by using the military to protect local markets and supply sources. The problem is, the model presumes that every nation will have a surplus of exports available, and be able to continue to grow through use of that surplus. Not all nations have a surplus, and as time progresses surplus exports will necessarily shrink with economic growth and success in trade.