sentences:  As the interwar period continued, the United States did not emphasize biological weapons development or research.While the U.S. was spending very little time on biological weapons research, its future allies and enemies in the upcoming second World War were researching the potential of biological weapons as early as 1933.,
  
  Despite the World War I-era interest in ricin, as World War II erupted, the United States Army still maintained the position that biological weapons were, for the most part, impractical.Other nations, notably France, Japan and the United Kingdom, thought otherwise and had begun their own biological weapons programs.