Why was it significant that la salle claimed all the land that drained into the mississippi river? a. la salle was not authorized to claim any new land for france. b. la salle accidentally made a claim on a huge area of land. c. la salle made a claim on the same land that the spanish had claimed. d. la salle convince american indian tribes to move west.

The correct option is C

C. La Salle made a claim on the same land that the Spanish had claimed.

The Spanish incursion into Texas came at the backdrop of the explorers claims and was motivated by the threat, which also served surprising to instill the notion of Texas being a french territory by the French until french imperial presence in the area was ended.  It also laid the basis of the Louisiana purchase.