The answer to the question above is they allowed American immigrants to populate Texas.
Under the Empresario System, the Mexican (in order to civilize Texas in 1820s, after they achieved their independence) government allowed American immigrants to settle and populate on Texas.
im confused by reading this
Imposed duties are duties, the burden of which is imposed upon a person. They are those duties of a municipal corporation which are superadded to merely governmental functions, like the special private corporate duty to maintain streets in a safe condition for public travel, or the special, private corporate duty to maintain and manage corporate property so that city employees shall have safe places in which to work.