What was columbus's attitude toward the native americans? why did he have this attitude?

He mentioned in his diary that they would be great workers, or if you prefer another word - slaves.

Well, we can also read in the same diary that the Native Americans were not really developed so it was easy to force them to work - maybe that's the reason for his attitude.

-He saw them as good possible slaves

-Spain had more warpower than native american tribes

Explanation:

Colombus never knew he was in America, he thought he had landed in Asia and believed native Americans to be Asian people. In those times it was fairly common for an empire to "conquer" other lands and subjugate them in order to obtain some source of resource, even slaves. So when Colombus stated in his diaries that these people would make great slaves, it was because he was representing the crown, and that was a common practice at the time, it was usually a comparison of battle power, Colombus was implying that they could be subjugated easily.