1 federal

2 federation

3 commonwealth

4 federal union

5 federal state

6 union

1 Frederic Chopin or Fryderyk Franciszek Chopin (1810-1849), Polish pianist and composer

1 country

2 nation

3 state

1 Liu Bang (256 or 247-195 BC), bandit leader who became first Han emperor Han Gaozu 漢高祖|汉高祖 (reigned 202-195 BC)

1 friendly state

2 ally

1 much hardships may awaken a nation (idiom); calamity that prompts renewal