Answer:
Motivations for colonization: Spain's colonization goals were to extract gold and silver from the Americas, to stimulate the Spanish economy and make Spain a more powerful country. Spain also aimed to convert Native Americans to Christianity.
Explanation:
Germans executed the Austrian Archduke, Ferdinand.
War broke out as a result among neighboring countries.
I believe the answer is: It caused the Roman empire to have a small and weak army.
By enforcing conscription, the majority of Roman soldiers were brought out to aid in the conquest to expand the Roman empire. When this happen, the defense for within the Capital become extremely weak and fragile. This make it easier for the invaders to attack and destroy the capital.
I agree. This means that people were forced to migrate, not by there free will. Probably to find work, food, and water, and a more suitable living area. Good luck.