Why would politicians play one group of people against another group of people?

Who established a colony on roanoke island? a. francis drake b. edmund spenser c. william shakespeare d. sir walter raleigh

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a.seismic waves kill microoganisms b.seismic waves disrupts the sand and causes seafloor erosion c.seismic waves have virtually no adverse affects on marine life d.seismic waves damage the sonar that dolphins and whales use to orient themselves underwater

What was new about the writing system developed by the phoenicians, and why was this important to the growth of knowledge and spread of ideas?