<h2>~<u>Answer</u> :-</h2>
- An attack by one country against another over a border dispute.

Answer:
c. Winchester Model 1873
Explanation:
doesn't exactly need an explanation does it?
It's purpose was to ban slavery in the territory acquired from Mexico during the Mexican War
First Arabs came into North Africa, then gold-salt trade flourishes on the Trans-Saharan route, then Islam spreads to Western and Southern Africa, then all of North Africa comes under Muslim rule