1 could be when they were think of where to put nuclear waste, they look back to history so they wouldn't make thee same mistake by putting it in a volcano thinking it is a mountain. or for wars history is being written again becuse of some of the president's in different countries fighting on the same thing and possibly starting a world war and that would start something that happened earlier in the past from ww1 and ww2
The reason for the decline of the Heian Dynasty in Japan was "<span>Elite clans amassed most of Japan's lands into vast estates".</span>
A country or area in which another country has power to affect developments although it has no formal authority.
The introduction of the cotton gin by Eli Whitney had a great effect on the plantations, as well as slavery. Before the cotton gin was invented, the production of cotton was a… painstaking business. To remove the cotton fiber from the seeds took a great amount of time.
