import networkx as nx
import matplotlib.pyplot as plt

g = nx.Graph() 	# Creates a graph

edges_file = open("states_border_edges.txt")
for line in edges_file:
    cities = line.split(",") # split the line, dividing up by commas
    # add the two cities as a new edge in the graph
    g.add_edge(cities[0].strip(), cities[1].strip()) 

g.add_edge("Idaho", "Utah")
g.add_edge("Oregon", "Idaho")
g.remove_edge("Washington", "Utah")
g.add_edge("California", "Nevada")
g.add_edge("Nevada", "Utah")

nx.draw_networkx(g)  # Draw the graph
plt.show()		 # Show the graph