Help

I have 222 corporations in my main country and 100 in my enterprise a lot of the pro/hiring is at 6 and 10 percent how to raise it?? I raise the salaries but that
Only help a few of them any tips or advice would be great my main country is called the United empire of Rome I've already brought it out of three bad depressions and one great depression I took it from going bankrupt to having 5T without using gold coins thanks to everyone who help me