Civilization 5 how to make the computer declare war on me

1, smash the economy, let the military, and let the computer with a slightly higher difficulty "greet" you. 2. Constantly sign trade treaties and put forward various unreasonable demands (ai is not stupid and will never agree), thus reducing the relationship to the worst, and the probability of ai provocation will greatly increase. 3. It will also be effective to seize resources vigorously, push ai to a place where resources are scarce, or simply use immigrants to squeeze ai's land.