Types of Graphs. 1  Types of Graphs: Bar Graphs. 2  Types of Graphs: Box and Whiskers (Boxplots) 3  Types of Graphs: Frequency Distributions.  Types of Graphs: 1  Histogram. Types of Graphs: Line Graphs.  Types of Graphs: Pie 1  Graphs. Types of Graphs: Scatter Graphs.  Types of Graphs: Stemplots.
The 1950s. By the end of the war, TVA had completed a 652-mile navigation channel the length of the Tennessee River, and had become the nationâs largest electricity supplier.
The Tennessee Valley Authority (TVA) is a U.S. government agency. It oversees several projects involving the Tennessee River. The main project uses the power of the river to provide electricity to 9 million people in Tennessee and six other states-Mississippi, Alabama, Kentucky, North Carolina, Virginia, and Georgia.