Which of the following was a significant effect of Western imperialism in the twentieth century? a The decline of migrations to industrialized countries b The development of nationalism among colonized peoples c The systematic deterioration in public health conditions d The conservation of the environment in colonized areas

B. The development of nationalism among colonized peoples

Explanation:

A significant effect of Western imperialism in the twentieth century is "The development of nationalism among colonized people"

This is evident in the rise of agitation for self-rule or self-government whereby the countries in western imperialism are being practiced and for independence from colonial rule.

This is shown by the Indian movement for self-rule around the 1940s, and many African countries in the 1950s to 1970s

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

its perfect how it was