By 1863, control of most of the mississippi river was in union hands. to gain control of the last major port city serving as an open shipping door to the south, grant weakened the enemy with a military campaign that lasted several months. first he isolated the port city by gaining control of the railroad, and then he began a seven-week artillery siege to force surrender.

what is the port city described above?

Cooperation among oligopolies runs counter to the public interest because it leads to underproduction and high prices. in an effort to bring resource allocation closer to the social optimum, public officials attempt to force oligopolies to compete instead of cooperating. consider the following scenario: suppose that the presidents of two auto manufacturing companies exchange text messages in which they discuss jointly raising prices on their new lines of hybrid suvs. this illegal communication would violate which of the following laws? the sherman antitrust act of 1890 the robinson–patman act of 1936 the celler–kefauver act of 1950 the clayton act of 1914