What good did whites do for native americans?

Early on, the Native Americans cordially welcomed the Europeans in general. However, the greed of whites for gold, silver and exotic goods would soon change this peaceful relationship, promoting violent ethnic of the native populations. In addition to the physical destruction itself, the Native Americans had their culture, their uses and their customs destroyed by the Europeans, who, in the name of "civilization" and "religion," imposed on them new languages and a new faith.

It is not easy see something good about this.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

during world war ii