How to train a dog to ring bell to go outside

What were some passive/non-direct ways that enslaved africans did to resist slavery?

Some european explorers sailed west looking for the passage to india

In the years after world war ii, which of the following caused many people from asian and african countries to migrate to europe? a. the end of the soviet union b. new economic opportunities after colonialism ended c. the religious freedom found in europe d. new laws allowing greater numbers of immigrants into european countries