virtual libraries present a new paradigm for learning in school libraries ,change to past perfect tense​

Using the past perfect tense, the sentence becomes:

Virtual libraries had presented a new paradigm for learning in school libraries.

Explanation:

The past perfect tense is used to talk about actions that took place in the past before another action that also took place in the past. Let's make a simple timeline to represent that:

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past                    simple                      present                  simple              simple

perfect               past                          perfect                   present            future

For example, suppose you washed the dishes. Your mother arrived after you washed the dishes. Thus, you can use the past perfect to express the first action. The structure is subject + had + main verb (past participle):

I had washed the dishes before my mother arrived.

Having that in mind, we can change the sentence in the question using the past perfect to become:

Virtual libraries had presented a new paradigm for learning in school libraries.

in the shadow of war

the african society basically suffered the consequences of colonization and apartheid directly attacking the black people, first, during the colonialism and its main idea which which "white people" had better rights, affecting   them principally in the right to establish black people in their territories, access to quality education and health services and took away any civil right even to the black people to feel they have the same opportunities as the settlers.