As dicolotean tried to abolish the religion of Christianity, more romans started converting, so diocletians reforms were unsuccessful.
They did all the work for the Americans, so then the Americans had money to put towards building news town and inventions which then started to build our country.
It would start by communication is key like propaganda
It gave the allies more time to prepare. And because of e size of are army it slowed down Germany and gave use more time to build up are army.