What is the primary reason to have 3 branches of government

To ensure the separation of powers as well as to ensure the governments is effective and the citizens' rights. This means each branch has it's own powers and responsibilities, including working with the other branches.

it makes companies more competitive it mainly alot

giving the us more money to give to the states it allows them to sell oversee and to other countries and more

haitian revolution slaves initiated the rebellion in 1791 and by 1803 they had succeeded in ending not just slavery but french control over the colony