Aphid Parasite Wasp - Aphidius or Trioxys sp. Family BRACONIDAE . This page contains pictures and information about Aphid Parasite Wasps that we found in the Brisbane area, Queensland, Australia. Body length 2mm. Aphid Parasitic Wasps are the very small wasps. They fly actively searching for aphids.
Causes of the Mexican War. Leading causes of the Mexican War included: Texan Annexation. Mexico had warned it would regard annexation as an act of war. When it took place, Mexico did not declare war, but broke diplomatic relations. The Boundary Dispute. Regardless of its status (was it an American state or a rebellious Mexican province?), the United States maintained that the southern border of Texas was formed by the Rio Grande, but Mexico argued that the traditional boundary was at the Nueces River farther north.
By Martin Kelly. The US Civil War lasted from 1861 to 1865 and led to over 618,000 casualties. Its causes can be traced back to tensions that formed early in the nation's history. Following are the top five causes that led to the War Between the States.. 1. Economic and social differences between the North and the South. With Eli Whitney's invention of the cotton gin in 1793, cotton became very profitable. This machine was able to reduce the time it took to separate seeds from the cotton.