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.
It galvanized public opinion which came to support entering the War. The United States declared War (April 6, 1917). Despite what had been strong anti-War sentiment, both the Senate and House overwhelmingly voted to declare war.