Other tariffs and taxes were imposed by Parliament. He was an advocate of mercantilism, monopolies, subsidies, tariffs, and internal improvements. Economic sanctions may include various forms of trade barriers, tariffs, and restrictions on financial transactions. Trade wars are often dependent on such tariffs and restrictions hurting the opposing economy. He also has said that nations adopting protectionist tariffs and policies eventually crumble. This policy often takes the form of tariffs and restrictive quotas. He protected his industries with high tariffs and minimal restrictions on domestic trade. The economy also suffered from increasing tariffs and taxes imposed by the Spanish Crown. Mechanisms for this intervention include price floors, caps, taxes, tariffs, or quotas. Trump countered with a threat to impose tariffs on European car manufacturers. Governments benefited from the high tariffs and payments from the merchants. Heavy tariffs and taxes limited the speed of development. Measures to promote a trade surplus such as tariffs were generally favored. A few countries are exempted from certain tariffs. Finally, Jews paid more than other residents in extra tariffs and additional taxes.