Contractors, Article 4. Classifications. 7058. (a) A specialty contractor is a contractor whose operations as such are the performance of construction work requiring special skill and whose principal contracting business involves the use of specialized building trades or crafts.
The United States declared war on Germany for many reasons. One of them was the sinking on neutral ships and the lusitania which killed about 148 Americans. This was not the immediate cause, another is propaganda which persuaded public opinion.
President Woodrow Wilson gave a speech to Congress on April 2, 1917 giving reasons why the United States should declare war on Germany. The speech outlined the military actions that the German government was doing that constituted an act of war. As such, President Wilson urged Congress to declare war on Germany.