concepcion rash, with her daughter-in-law isabelle, prepares the evening meal.over a wood fire, beneath a thatched roof, much the same way that the three-stoned hearth was used at ceren 14 centuries ago. the rash family is mainly self-sufficient. they teach their children and grow their food, all within a short distance of the home. as in ancient times, daily life revolves around the household. [ baby crying ] anthropologist richard wilk. there's a lot of good reasons for people here to want to live in a multiple-family household like this. there's a lot of jobs that have to be done every day, both by men and women -- washing, hauling corn in from the field, cutting firewood. these kinds of things take time every day. and if you're off working in the fields, you can't do them. by having multiple-family households like this, they can divide up the labor. [ speaking native language ] interpreter: what can i say ? it's a lot easier working together. without a helper, life is much harder. since we're at home, we can help each other, whatever happens. keach: the rash

wide range of incentives an ideal location in that many of the world's industrial heavyweights of concepcion and sets up shop. focal point stretching into the distance as far as the eye can see the scale of a law book is hard to grasp its container terminal hundreds around forty thousand containers a year the whole site was a massive twenty square kilometer and there are plans to double this by two thousand and sixteen thirty seven companies have stakes their claims with a total of three billion dollars on the signs and nine already up and running the ultimate build industry is one of the lobbies q directions and we made a house call on one of the residents and said set and misspent designs and produces exhaust systems for russian and c.i.s. ta manufacturers the company only became a resident of the special economic zone fairly recently investing one hundred sixty three million dollars in this facility. one of the company's main products is this sizable exhaust system fifty years old on petrol kamaz lorry engines on the company has come a long way from its money speed jennings almost twenty