One-party systems are often associated with dictators, whether they are "good" or "bad." Most dictatorships allow only one party, which totally controls the government.
Explanation:
Early working conditions were so harsh that nearly all skilled American workers deserted within a year. As work on the canal progressed, however, the Isthmian Canal Commission improved facilities and provided incentives for workers to stay.
Integration of black people into the political spectrum
The correct answer to this question would be alternative D)"Developing countries often specialize in manufacturing and providing raw materials, which can seriously harm the environment."
Alternative D precisely describes the problems for the environment in developing countries.
If you take Brazil, for example, there is plenty of natural resources there, and the soil is fertile for many types of crops, including soy, corn, etc. Animal Husbandry is also a successful activity.
All of these need extensive lands, which can cause deforestation, pollution of the soil, air and of drinkable water. Since these are some of the most important industries of the country, and they're partly responsible for the development of the nation, the government doesn't do much to stop or regulate them, since they need these activities themselves.
