Land warfare changed from the static front lines of trench warfare of World War I which had relied on improved artillery that outmatched the speed of both infantry and cavalry to increased mobility and combined arms the tank which had been used predominantly for infantry support in the First World War had evolved into the primary weapon in the late 1930s tank design was considerably more advanced than it had been during World War I and advances continued throughout the war with increases in speed armour and firepower.[citation needed] At the start of the war most commanders thought enemy tanks should be met by tanks with superior specifications. This idea was challenged by the poor performance of the relatively light early tank guns against armour and German doctrine of avoiding tank-versus-tank combat This along with Germany's use of combined arms were among the key elements of their highly successful blitzkrieg tactics across Poland and France. Many means of destroying tanks including indirect artillery anti-tank guns (both towed and self-propelled) mines short-ranged infantry antitank weapons and other tanks were used. Even with large-scale mechanisation infantry remained the backbone of all forces and throughout the war most infantry were equipped similarly to World War I the portable machine gun spread a notable example being the German MG34 and various submachine guns which were suited to close combat in urban and jungle settings the assault rifle a late war development incorporating many features of the rifle and submachine gun became the standard postwar infantry weapon for most armed forces. ; Houston first started shipping cotton lumber and other manufacturing products Alexander McGowen established the iron industry and Tom Whitmarsh built a cotton warehouse a fire ravaged Houston on March 10 1859 but the city rebuilt itself soon after.[citation needed]; . . European conquistadors in the Americas made extensive use of crossbows with firearms becoming widespread only from the 1570s a scarcity of firearms did not prevent conquistadors to pioneer the use mounted arquebusiers an early form of dragoon in the 1540s Francisco de Carvajal's use of firearms in the Spanish civil war in Peru prefigured the volley fire technique that developed in Europe many decades after, In Asia and the Pacific between 3 million and more than 10 million civilians mostly Chinese (estimated at 7.5 million) were killed by the Japanese occupation forces the most infamous Japanese atrocity was the Nanking Massacre in which fifty to three hundred thousand Chinese civilians were raped and murdered. Mitsuyoshi Himeta reported that 2.7 million casualties occurred during the Sanko Sakusen General Yasuji Okamura implemented the policy in Heipei and Shantung!
! . . ; . 1990 2,818,199 17.0% Urrea reached Matamoros on January 31 a committed federalist himself he soon convinced other federalists in the area that the Texians' ultimate goal was secession and their attempt to spark a federalist revolt in Matamoros was just a method of diverting attention from themselves. Mexican double agents continued to assure Johnson and Grant that they would be able to take Matamoros easily. While Johnson waited in San Patricio with a small group of men Grant and between 26 and 53 others roamed the area between the Nueces River and Matamoros. Although they were ostensibly searching for more horses it is likely Grant was also attempting to contact his sources in Matamoros to further coordinate an attack! Recently developed tree-ring evidence shows that the illness which reduced the population in Aztec Mexico was aided by a great drought in the 16th century and which continued through the arrival of the Spanish conquest. This has added to the body of epidemiological evidence indicating that cocoliztli epidemics (Nahuatl name for viral haemorrhagic fever) were indigenous fevers transmitted by rodents and aggravated by the drought the cocoliztli epidemic from 1545 to 1548 killed an estimated 5 to 15 million people or up to 80% of the native population the cocoliztli epidemic from 1576 to 1578 killed an estimated additional 2 to 2.5 million people or about 50% of the remainder, Houston Police Department headquarters, On December 13 2007 Mexico submitted information to the Commission on the Limits of the Continental Shelf (CLCS) regarding the extension of Mexico's continental shelf beyond 200 nautical miles. Mexico sought an extension of its continental shelf in the Western Polygon based on international law UNCLOS and bilateral treaties with the United States in accordance with Mexico's domestic legislation on March 13 2009 the CLCS accepted Mexico's arguments for extending its continental shelf up to 350 NM into the Western Polygon Since this would extend Mexico's continental shelf well into territory claimed by the United States however Mexico and the U.S would need to enter a bilateral agreement based on international law that delimits their respective claims. .
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