To reduce the influence of British traders, Spain renewed efforts to encourage French settlers to decamp from Illinois to Missouri, and in 1778, the Spanish offered generous land grants, basic supplies, and access to enslaved African Americans to Catholic immigrants on the east bank of the Mississippi River. However, only a small number of Illinois French pursued settlement across the Mississippi. A second effort by the Spanish against the British found greater success: starting in the late 1770s, the Spanish officials began openly supporting American rebels fighting against British rule in the American War of Independence. Spanish officials in both St. Louis and Ste. Genevieve were instrumental in supplying George Rogers Clark during his Illinois campaign of 1779.