Yes, Mr. Tamura, as you say, "Christopher Columbus was a man of his time. Sure what he did to the Indians were wrong by our standards today but they weren't so wrong by his standards back then." He was a product of the culture created in Europe by the Roman Catholic church, which I show at http://CatholicArrogance.Org/MoralRelativismLatinAmericanStyle.html had so destroyed the conscience of its followers that they had no qualms about murdering, raping, and enslaving their neighbors!  
There were more civilized people in Europe even in those days, but they risked persecution and death if they dared publicly challenge the immorality of the Holy Roman Catholic Empire.