What actions did Hitler take against Poland and Great Britain? How did he justify these actions?

Explanation:

Nazi leader Adolf Hitler claimed the massive invasion was a defensive action, but Britain did not care. On September 3, they declared war on Germany, initiating World War II. Rather than take a strong defensive position, troops were rushed to the front to fight war against Germany, Britain and France did little militarily to aid Poland.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69

answer; (c) slaves brought to the americans from africa;