Which of the following best describes the start of world war 1

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

Name three new weapons that changed how ww! was fought and how?

The idea of manifest destiny simply stated it was america's destiny to expand from the atlantic ocean to the pacific. the word "destiny" implies an idea that it was within our rights as a nation to expand. in a paragraph of 125+ words, explain what could be wrong with that idea.