Lmao this is comparing apples to bowling balls. You are talking about a nation of hundreds of millions, with hundreds of years of history, a constitutions that's been amended many times, along with independent states each with their own government, opposed to a small island where power was acquired through brute force and the original inhabitants were immediately subjugated to slavery.

Also, yes, they gave Columbus that much power. It wasn't like they could replace him immediately if they were dissatisfied although they did remove him eventually. Did you know Columbus was in with the Portuguese nobles through marriage? His wife was a noble. All of this information is available to you if you cared to look beyond the surface and get over your own feelings.