What was one of the primary reasons for the spread of the bubonic plague (the “ black death”) a- increase in trade b- colonization of the america’s
c- development of the manorial system
d- economic decline

d is the correct answer

~courtney

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34

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.