Russian America was settled by "promyshlenniki", merchants and fur trappers who expanded through Siberia. They arrived in Alaska in 1732, and in 1799 the Russian-American Company (RAC) received a charter to hunt for fur. No colony was established, but the Russian Orthodox Church sent missionaries to the natives and built churches. About 700 Russians enforced sovereignty in a territory over twice as large as Texas. In 1821, Tsar Alexander I issued an edict declaring Russia's sovereignty over the North American Pacific coast north of the 51st parallel north. The edict also forbade foreign ships to approach within 100 Italian miles (115 miles or 185 km) of the Russian claim. US Secretary of State John Quincy Adams strongly protested the edict, which potentially threatened both the commerce and expansionary ambitions of the United States. Seeking favorable relations with the U.S., Alexander agreed to the Russo-American Treaty of 1824. In the treaty, Russia limited its claims to lands north of parallel 54°40′ north, and also agreed to open Russian ports to U.S. ships.