What changed in Florence as a direct result of the development of the silk road trade? Florence was able to gain independence from the Holy Roman Empire.
Florence’s Republic was universally accepted by European monarchs.

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

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

the northwest ordinance of 1787 guaranteed basic rights for settlers and banned slavery there.