How Effectively Did England Enforce Mercantilism?

England (later Great Britain) was highly successful in enforcing its mercantilist system from the 17th to 18th centuries, due to four pillars:

1. Political Will: Crown and Parliament viewed mercantilism as essential to national power and wealth. Navigation Acts (1651, 1660, 1663, 1696) had broad support.
2. Regulatory Framework: Comprehensive laws: enumerated goods (tobacco, sugar, cotton) could only ship to England/English colonies; European imports to colonies had to pass through England; colonial manufacturing restricted (Wool Act 1699, Hat Act 1732, Iron Act 1750).
3. Royal Navy Dominance: After 1688, the Navy protected convoys, intercepted smugglers, and enforced blockades. Admiralty courts (vice-admiralty) tried violations without juries.
4. Geographic Advantage: Island position controlled Atlantic approaches; colonial trade routes funneled through British ports.

Result: By 1750, Britain was Europe's leading commercial power. However, enforcement bred colonial resentment—smuggling was rampant, and the system's rigidity fueled the American Revolution. Success sowed the seeds of its own unraveling.