The correct answer is: "remained Communist".
Cuba has been a socialist state governed by the unique Communist Party since the sucess of the revolution leaded by Fidel Castro in 1959, which managed to remove the dictatorship of Fulgencio Batista.
After the collapse of the USSR (1991), Cuba lost its most powerful ally, that had helped them to survive after the trade embargo and the international sanctions that the US had set on Cuba. Therefore, the country experienced very severe economic consequences at this moment but this did not change the government or the economic system.
Answer:
1. Tonga (/ˈtɒŋ(ɡ)ə/; Tongan: [ˈtoŋa]), officially named the Kingdom of Tonga (Tongan: Puleʻanga Fakatuʻi ʻo Tonga), is a Polynesian country, and also an archipelago comprising 169 islands, of which 36 are inhabited.
2. Tonga is the only kingdom in the Pacific since Taufa'ahau (King George) in 1875 declared Tonga a constitutional monarchy, he also gave Tonga its first constitution. In 1970 the former British protectorate acquired its independence and became a sovereign nation.
They built aqueducts that retrieved water from the mountains