What did Adolf Hitler promise his people ?
Hitler promised his people that he would solve their problems (like the Depression after the Wall Street Crash) and bring Germany back up. Many people disagreed with the Weimar Republic and the Treaty of Versailles, so they were willing to have someone that would solve things for them.
Hitler united everyone and appealed to all groups in society.
E.g:- Helping farmers by putting higher prices on their produce, Promised unemployed workers with jobs, etc..
Really, people were tired of the poor quality of life and Hitler had promised people with exactly what they wanted to hear.