Why is participating in a group a powerful way for a person to influence government?

According to the map, most mining occurs in the. part of the state

Which act of the conquistador pizarro was crucial in overthrowing the inca? a. the destruction of the ancient inca city, machu picchu b. the siege of the inca capital near the cuzco valley c. the execution of the last inca ruler, atahualpa d. the unexpected deaths of 3 million inca warriors e. the murder of former inca emperor, huascar

What was significant about the election of 1828 a. it was first to include b. it was first under new voting reforms c. it reintroduced the two party system d. it was decided by members of congress