Questions

Squirrels build their nests in summer season as the sticks with what they bulit are dried and are less weight and the nests will be used for the rainy season.

The side view mirror, in all the vehicles we use only convex mirror. This mirror makes the objects and small to show them in the mirror. That's why in all such mirrors, "Ojects in the mirror are closer than they appear."

Protested is used because here the villagers express their feeling by making an objection to what has been done.

No improvement required. Sentence is idiomatically correct.

In Spain, where there were no protestants, a soldier named lgnatius Loyola started an organisation for clergymen to work wholly as 'soldiers of jensus' in the service of the Church. Its members came to be called jesuits. They went from place to place and won back followers in France and Germany. They established missions in india, china, Africa and the Americas to gain new adherents. The Jesuit Schools which they started to strengthen the Roman Catholic  Church are still in existence in many countries of the world.