A presidential republic is one where the president is also the head of state, but he isn't involved in the legislative process and has his own executive branch. An example of this can be the government of the United States of America. Opposite of this would be a separation of powers where a president would not also be the head of the government.
The correct answer is B) they expanded the empire’s borders.
The tactic that both Chandragupta Maurya and Aśoka used to gain power was that they expanded the empire’s borders.
These feared emperors decided to expand their territories through conquering in order to gain more power, control, and influence in the region.
However, in the case of emperor Asoka, he inherited the ruling of the Mauryan Empire in 273 BC and followed his grandfather's steps. He conquered, fought many battles, and imposed his will in his new territories. But he got tired when he realized all the pain and suffering caused by the war. He converted to Buddhism and started to appreciate values such as tolerance, justice, and respect.
At the end of the English Civil War, the monarch was executed and replaced by "Oliver Cromwell", since at first there was a massive power vacuum that needed to be filled.
