Answer:
To prevent border violations by border theives and to protect their territory from the Native Americans.
The UN uses global food systems to offer aid to poor countries.
During the first British Empire, the British began colonizing other countries due to the need for trade and raw materials. It established thirteen colonies in North America, as well as colonies in the Caribbean and India.
The appropriate answer is b. Mongol tribes invading Muslim lands. The Mongol tribes had been empowered Genghis Khan and as such had become a formidable hoard of conquerors that had seized much of the Eurasian landmass and the ruling Islamic caliphate in the west. The hardships during this period marked the end of the Golden age of Islam.
