To those who "speak for God"

In the roughly 4.2 billion years that the earth has been in existence, the nation known as the USA has been in existence for less than 250 years of those 4.2 billion years. (And bits of it have been part of the nation for much less than that.)

If America was such a good idea, why did God wait so long to make it such? And why did God depend on refugees from other nations to make it so? And why did its discovery by disease-ridden riff-raff depend on chance? (They were looking for something else entirely.)

And was it God's intention to have a predominantly white, slave-owning nation (as it was)? Or a multicultural nation with freedom for all and whites in the minority (as it will be, very shortly)?

And what do you think God's punishment will be for those Republicans who insist on the freedom to pollute and despoil God's "chosen" country?

BTW, how did you learn the U.S. was God's nation? Who told you this? And what was the chance of that person being in error? What is your authority to speak for God?