Answer:
Guns
Explanation:
Pizarro was a Spanish conquistador and traveled to the Americas. Once there he met the Incas, the Inca hadn't been exposed to gunpowder until the rifles and cannons of the Spaniards were trained on them. The Inca's primitive weapons (spear, bow, etc..) were no where near the power of Pizarro's guns and cannons.
D because they want the nation to be safe from foreign attacks.
It led the party to win the election and institute segregation in the country.
Britain had a plentiful supply of money to invest in new machines and factories.