The American colonists fought the British for one main reason. They fought because they wanted to be independent. Since you ask for two reasons, I assume that you need two reasons why they wanted to be independent.
One reason the American colonists wanted to be independent was British taxation. Many Americans did not think that the British government had the right to tax them.
This is the largest equilateral triangle that will fit in the circle, with each vertex touching the circle. This is very similar to the construction of an inscribed hexagon, except we use every other vertex instead of all six.
Hope this helps:)
The main reason why Stalin wanted Britain and he United States to open a second front in France is because for much of the beginning of the war, Russia was fighting Germany on the ground almost completely alone and suffering great losses.