b. barter economy
Simple trading, no money involved. (Also the definition of barter)
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.
The Americas (specifically North America) is to Native American as New Zealand is to Maori.