Americans want to restrict immigration due to the present president having a border to keep out immigrants that may bring illegal items to the USA which makes them to support but these 'Americans' want to abolish the immigrants so no one can bring anything illegal or "take anything". (ex: Jobs, Property)
It is false. The first gas-driven motor vehicle was built by Carl Benz in 1886.
The best answer is the following one;
tried to force people to improve their morals.
The prohibition tried to make people stop drinking alcohol, which can be seen as "noble". People did not decide it themselves but it was forced on them, so it is justified to say that the law during the Prohibition time tried to force people to improve their morals.