In 1838 and 1839, as part of Andrew Jackson's Indian removal policy, the Cherokee nation was forced to give up its lands east of the Mississippi River and to migrate to an area in present-day Oklahoma. The Cherokee people called this journey the "Trail of Tears<span>," because of its devastating effects. this is yo answer
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The phrase "glued to their horses" simply meant that the Huns were such skilled fighters and riders that it was very difficult to knock them off their horses during an attack.
It caused the war because Austria blamed Serbia for the killing of the Archduke Franz Ferdinand. ... I think the most significant cause of World War one was the assassination of the Archduke Franz Ferdinand. The other causes of the war was Imperialism, Militarism, Nationalism and Alliances that were formed.F