a. his empire became too large for him to control
The name is this act was the coercive acts. These acts were also called the "Intolerable acts".
The fact that Japan is a very small island nation has always made it hard for them to have enough domestic natural resources, which has historically meant that they have elected powerful leaders who have supported going to war with larger countries, such as China and Russia, in order to gain more territory.
It allowed Missouri to be a slave state.