Answer: gas pipe lines
Explanation: There are three major types of pipelines along the transportation route: the gathering system, the interstate pipeline system, and the distribution system. The gathering system consists of low pressure, small diameter pipelines that transport raw natural gas from the wellhead to the processing plant.
In Algeria, quality improved the least and actually declined by 2008 to a score lower than that recorded in 1996. In India, political stability improved the least and actually declined from 1996 to 2010. In Algeria, stability and government actually improved the most over the period, although political stability remains the lowest score. In India, quality, or the ability to create economic opportunities, improved the most during the period.
The middle class was different after the industrial revolution than it was before because prior to the Industrial Revolution, Europe had a small middle class. Following the Industrial Revolution, the middle class greatly grew.
After the industrial revolution, the lower classes were been able to "rise up" economically by getting new jobs in factories, thus much of the lower class entered the middle class.
The correct answer is A. Both the Songhai and Mongol empires poured themselves into their military hierarchy to control the conquered regions.
