I need an expert in World History after 1800 who can help me giving me insightful answers on attached file

Question

I need an expert in World History after 1800, who can help me giving me insightful answers on attached file

questions which I need to be prepared for an exam. Please write me a perfect essay prompt to those questions. (Please try your focus on giving me insightful answers rather than making the quality of writing)

I am not going to give credit for copy and pasted work nor unprofessional work.

The twentieth century wars The 20th century went down in history as the most costly and bloody century in the history of
human being. This century was dominated or rather experienced the biggest…
World History