It's the foreign policy Theodore Roosevelt used, "Speak softly, and carry a big stick"
The Industrial Revolution shifted from an agrarian economy to a manufacturing economy where products were no longer made solely by hand but by machines. This led to increased production and efficiency, lower prices, more goods, improved wages, and migration from rural areas to urban areas
There Was Definitely More Than One. A Common One Was Illness. Another One Was Lack Of Food/Water. There Was Also Indians, And If Your Trail Broke, Then You Were Out Of Luck As Well.
Answer:
The political power of the Abbasids largely ended with the rise of the Buyids and the Seljuq Turks in 1258 CE. Though lacking in political power, the dynasty continued to claim authority in religious matters until after the Ottoman conquest of Egypt in 1517.