Instrumental or cognitive aggression: these terms are interchangeable, both meaning the aggression is planned and is used as a means to meet a goal that can't be achieved in any other way.
Instrumental aggression is a planned attack and is typically the one means left. It is seen as necessary as no other plan has worked to achieve the goal. It is thought out and even justified by a higher moral grounds.
To show the number of lithium atoms involved in the reaction
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The slave trade had devastating effects in Africa. Economic incentives for warlords and tribes to engage in the slave trade promoted an atmosphere of lawlessness and violence. Depopulation and a continuing fear of captivity made economic and agricultural development almost impossible throughout much of western Africa.
De Soto is the explorer that discovered the Mississippi River.