The most important political system with multiple political parties is a democracy: for example in the US the Republicans and the Democrats struggle for power.
In constitutional monarchy, such as in the UK, there can also be multiple parties, that rule together with the monarch (or alone and the monarch is just a representative function).
Some forms of oligarchy could also see multiple political parties, although this case is rare.
<span />
A dispute over a contract between two people in the same city would most likely be heard first in a "local court", unless of course the dispute is over something very serious, such as a violent crime.
C is the answer it didnt affect other countries
The vast majority of those who were enslaved and transported in the transatlantic slave trade were people from central and western Africa, who had been sold by other West Africans to Western European slave traders (with a small number being captured directly by the slave traders in coastal raids)
HOPE THIS HELPED!!! XD