Viết lại câu They cancelled all the flights because of fog. =>All the flights.……………… ………………………………..

All flights were cancelled because of fog.

Explanation:

The sentence provided in the question, " They cancelled all the flights because of ." is in the as the subject does an action against object

We have to change this active voice of the sentence into a passive voice sentence.

While changing a sentence from active to passive, the object of the active voice becomes the subject of the passive voice and the verb in the sentence changes to passive form from active form.

Therefore, the passive voice of the sentence would be :

"All flights were cancelled because of fog."

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.

these have to be in your own words