The former president, who's running again, was scheduled to speak about education policy, but he first focused on farmers, and his strong support while in the White House for ethanol, eliminating the estate tax, and repealing environmental regulations.
"In our four incredible years we achieved more for Iowa than any president in American history. And in particular the farmers they know better than anybody, working hand in hand with Iowa's leaders, I was the most pro-farmer president that has ever been in the White House."
And that included using tariffs to force China and other countries to buy US corn and soybeans, and stop dumping cheap steel and other products here.
Trump also voiced his support for restricting elections to paper ballots only, only one day for voting, and requiring voter ID.
"But we're not allowed to have one for voting. You have to have one when you buy groceries and other things, but you can't have one for voting. That's because they want to cheat, that's the only reason."
And looking at the war in Ukraine, and other conflicts around the world, he said he's never seen a more dangerous time.
"What they've done to our country in two years is unthinkable. Standing before you today I am the only candidate who can make this promise - I will prevent World War III - because I really believe we're going to have World War III."
Not only did his supporters fill the Adler Theater, but a full contingent of press turned out - a large pool of reporters flew up with him from Florida for the rally, with additional coverage by numerous local, regional, and national news organizations, even including Agence France Presse.