Question

why couldn't the Mexican goverment attend to Austin's demands​

Answer 1

Hoping to recover from bankruptcy with a bold scheme of colonization, Moses Austin meets with Spanish authorities in San Antonio to ask permission for 300 Anglo-American families to settle in Texas. Austin persisted and was finally granted permission to settle 300 Anglo families on 200,000 acres of Texas land.

text in Spanish:

Con la esperanza de recuperarse de la bancarrota con un audaz plan de colonización, Moses Austin se reúne con las autoridades españolas en San Antonio para pedir permiso para que 300 familias angloamericanas se establezcan en Texas. Austin persistió y finalmente se le otorgó permiso para asentar a 300 familias anglosajonas en 200,000 acres de tierra de Texas.