Answer:
Guerra de trincheras. Es una forma de hacer la guerra, en la cual los ejércitos combatientes mantienen líneas estáticas de fortificaciones cavadas en el suelo y enfrentadas.
Explanation:
<span>Enslaved people who lived and worked in cities have most oftentimes have hard time with the work, especially because the cost of living in the city is higher compared to the urban areas. Also, most of them are not treated well, depending on the city that they work in. </span>
Baby boomers happened as a result of the oil boom.
