Why does lincoln begin his eulogy to the soldiers buried at gettysburg with a reference to "four score and seven years agao"?

Kublai khan honored his mongol heritage by: a)marring only one wife b)praying facing mecca five times a day c)slaughtering ten chinese officials every year d)building a large enclosed hunting ground at shangdu,his summer palace

Why did reconstruction polices split the women’s suffer age movement?

Which is proper hierarchy or leadership roles in the senate from lowest to highest