How did the conflict expand to draw in much of Europe

Austria-Hungary declared war on Serbia on July 28; Russia (Serbias protector) began mobilization; Germany (Austria-Hungary chief ally) demanded Russia stop. Russia refused. Russia's ally (France) began readying troops as did Germany. August 1, Germany declared war on France

Explanation:

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.