You are observing the metaphase phase of mitosis
Mitosis is a process of cell reproduction in which a cell divides to produce two daughter cells that are genetically identical to the parent. Metaphase is the third phase of mitosis. During this phase, the two centrosomes pulls the chromosomes towards the opposite poles of the cell which causes the sister chromatids to line up neatly across the middle (equator) of the cell.
It was a rebellion against the 1773 Tea Act and occurred in 1773.
The Boston Tea Party occurred in 1773 in Boston Harbor when Americans who were disguised like Indians threw chests of tea in the Ocean. It was their way of protesting against the Tea Act of 1773 which grant the monopoly on tea to the East India Company despite their paying no taxes which harmed local tea merchants.
The Coercive and Intolerable Acts were the repsonse of the Birtish Empire, it led to massive retaliation like the forced closing of Boston Harbor. This party clearly prefigures the American Revolution which started in 1775
