President Donald Trump has promised a "golden age" for America. He became the USA's 47th President on Monday. President Trump promised to change the USA. He said America would grow and "be respected again all over the world". He added that he would put America first every day during his presidency.

President Trump says he has a God-given mission. He said: "My life was saved…by God to make America great again." Trump wants US astronauts to put the American flag on Mars. He wants to make the US economy strong. He said the USA has "the largest amount of oil and gas of any country.…And, we are going to use it".