The American civil occurred between 1861 and 1865. For the four years, over six hundred and twenty thousand soldiers (620,000) lost their lives in the battle and thousands were injured and the population in the southern America was left devastated...Events-During-Civil-War …

Birds are identified as endothermic vertebrates found in all habitats around the world. Its characteristics include; laying of hard-shelled eggs, strong but light skeleton, feathers, four chambered heart, toothless beaked jaws, and a high metabol...Essay-on-Birds:-All-About-Birds …

Vaccination is broadly considered as being among the greatest medical accomplishments of the contemporary civilization. Childhood infections that were common less than a decade ago are now progressively rare due to vaccines. In order to attain effici...Vaccination …