which shows the requirements of citizenship for ancient Athens, ancient Rome, and the modern United States. How has the idea of citizenship changed throughout history?

The idea of citizenship has changed throughout history because citizenship has been reshaped by immigration and the growth of population. In the past citizenship was determined more so by the place you were born. For instance people born in Athens, or ancient Rome was considered citizens of that country. Now , especially in modern U.S.A citizenship can be earned and worked for. For instance the immigrants that come from overseas and foreign countries, they can come to America and be a citizen within a few years.

Explanation:

so they can defeat there oppenent

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27