The Kalahari Desert is a large arid to semi-arid sandy area in southern Kgalagadi Africa extending 900,000 kmÂ² (362,500 sq. mi.), covering much of Botswana and parts of Namibia and South Africa. It has huge tracts of excellent grazing after good rains.
U.S. enters World War I. On April 6, 1917, two days after the U.S. Senate votes 82 to 6 to declare war against Germany, the U.S. House of Representatives endorses the decision by a vote of 373 to 50, and the United States formally enters the First World War. When World War I erupted in 1914,...
History World War I. Although World War I began in 1914, the United States did not join the war until 1917. The impact of the United States joining the war was significant. The additional firepower, resources, and soldiers of the U.S. helped to tip the balance of the war in favor of the Allies.