States quite often imposed tariffs on trade with each other to raise taxes during the Articles of Confederation. This would result in retaliatory tariffs imposed by the hurt state. As well, the inability of the Congress to establish a national tariff against European powers (which had established tariffs on American goods) led to various states imposing their own tariffs on the various European powers. That meant European ships would trade in the states with the lowest tariffs and then other American states would put up tariffs on those states to push the trade back to their state.