Sentence correction

Hi,

Does this note have any mistakes?

People in Iran all the time say "down to America". they say that because their regime tells them to. They have been deceived because their regime is the agent of America and England. Now is the motto "down to America" right of wrong? It's completely right.

America destroyed the people of Iran, but why? England chose their agent for that destruction named Khomaini, in cooperation with America.

But why did those two do that big crime on the people of Iran. It's the biggest crime that history will never forget. but why? Because Iran had and have oil.

At the time, when Iran's king was dominating Iran, the country was at its top level. English people would come to Iran to work. They were somehow migrants those these (but now we are). Then the King said something that scared the western counties especially America and England. He said, We will make Iran more advanced so that we will need nothing from other countries (western) and won't sell our oil but we ourselves produce useful materials using that. If the process succeeded, Iran would now be a country much topper than most of even the western counties.

Both America and England made Iran the way it is now, the most disgusting situation. And they committed thousand of genocides to this people, children, older, men and women.

Now, those two country alongside other western countries do carry on this situation, because it doesn't matter if a nation is being destroyed, what matters is that their nation is in a convenient situation. People say "down to America" and they are right.