. In the mid-to-late 1930s Japanese forces in Manchukuo had sporadic border clashes with the Soviet Union and Mongolia the Japanese doctrine of Hokushin-ron which emphasised Japan's expansion northward was favoured by the Imperial Army during this time With the Japanese defeat at Khalkin Gol in 1939 the ongoing Second Sino-Japanese War and ally Nazi Germany pursuing neutrality with the Soviets this policy would prove difficult to maintain Japan and the Soviet Union eventually signed a Neutrality Pact in April 1941 and Japan adopted the doctrine of Nanshin-ron promoted by the Navy which took its focus southward eventually leading to its war with the United States and the Western Allies.
. (7.9) 61.7 13 See also The city has hosted several major professional and college sporting events including the annual Houston Open golf tournament Houston hosts the annual Houston College Classic baseball tournament every February and the Texas Kickoff and Bowl in September and December respectively. Houston Texas Business Directory, Houston Texas Business Directory, Main article: Climate of Houston. . The University of Houston System's annual impact on the Houston-area's economy equates to that of a major corporation: $1.1 billion in new funds attracted annually to the Houston area $3.13 billion in total economic benefit and 24,000 local jobs generated. This is in addition to the 12,500 new graduates the UH System produces every year who enter the workforce in Houston and throughout Texas These degree-holders tend to stay in Houston After five years 80.5% of graduates are still living and working in the region, Many immigrants openly flouted Mexican law especially the prohibition against slavery Combined with United States' attempts to purchase Texas Mexican authorities decided in 1830 to prohibit continued immigration from the United States. New laws also called for the enforcement of customs duties angering both native Mexican citizens (Tejanos) and recent immigrants! .
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