The united states is very large and has many different cultural regions. the american south has its own dialect and lifestyle that is
very different from the lifestyle and culture found in california or new england. over the past several centuries, a distinct american
culture has arisen as these cultures converge in large part due to
a. the weakness of us neighbors, canada and mexico.
b.
a strong, centralized government based upon federalism
c. the fact the united states is a closed society.
d.
the ease of movement throughout the united states.

The answer is D.

Explanation:

for (a) a tragedy was considered a main greek drama and it influenced alot of others. for (b) the actors in greek theater were named as aeschylus, sophocles, and euripides and sometimes playwrites. for (e) in a semi-circular theater called the "orchestra.". we'll the question was explain where the namer actors originated.

hope this : d

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°