<span>The two main reason of the
immigration of northern Europeans were basically slavery and political
instability. There was no other choice but to relocate because of the conflict
and even war. Also environmental conditions were not so good that it was best
to relocate them and even some were sold for slavery.</span>
Some of the events leading up to the Boston Massacre are noted below. British troops had been stationed around Boston, so that officials representing the British crown could enforce unpopular legislation and this created even more tension. A mob had formed around the British soldiers and shouted verbal abuse at them and harassed them. This eventually led to the Boston Massacre.
A military action the added territory in the United States in 1848 was the Treaty of Guadalupe Hidalgo. It ended the Mexican-American war and added the territories California, Arizona, Colorado, New Mexico, Nevada, Utah, and Wyoming.
Answer: I was stuck between A and D but I’m pretty sure it is D
Explanation: