国, 邦, 國, くに
1. country, state
2. region
3. national government, central government
4. home (i.e. hometown, home country)
See 国郡里制, historical term
5. province (of Japan)
その王がその国を治めていた。
は
Particle, pronounced わ in modern Japanese
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis