 Even before Mexico gained control of Alta California in 1821, the onerous Spanish rules in effect from 1770 to 1821 against trading with foreigners began to break down as the declining Spanish fleet couldn't enforce their no trading policies.The Californios, with essentially no industries or manufacturing capabilities, were eager to trade for new commodities, glass, hinges, nails, finished goods, luxury goods and other merchandise.The Mexican government abolished the no trade with foreign ships policy and soon regular trading trips were being made.