Why were the colonists so angry that they boarded ships containing tea in boston and other colonies

Because there were being taxed on everything else but the te and that lead to the boston tea party  

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.

four sitting presidents have been assassinated while in office but the first was abraham lincoln,