the planet with those characteristics is Mercury
The women choose men to sleep with and if they tire of him while pregnant
Some groups in South America continued to live as nomads after the development of agriculture because their traditions and knowledge were very important and they didn't want to lose them. They wanted to preserve their lifestyle and values.
Nomads are people who live in communities that move from place to place, instead of settling down in only one location. There are three different types of nomads: pastoral nomads, hunter-gatherers, and peripatetic nomads.