What lead to the austria's declaration of war? the assassination of the heir to the austrian throne. the assassination of serbia's next ruler by austrian forces. the attempted destruction of germany's capital. the infiltration of austria-hungary into russian colonies.

The correct answer is A) the assassination of the heir to the Austrian throne.

The reason that led to Austria´s declaration of war was the assassination of the heir to the Austrian throne.

Austria-Hungary declares war on Serbia on July 28, 1914. Archduke Franz Ferdinand and his wife were assassinated in Sarajevo in June 1914.  That incident and the official declaration of war, represented the beginning of World War I.  

Voter turnout is the percentage of eligible voters who cast a ballot in an election. Eligibility varies by country, and the voting-eligible population should not be confused with the total adult population. ... Low turnout is usually considered to be undesirable.

Voter turnout in the United States fluctuates in national elections. In recent elections, about 60% of the voting eligible population votes during presidential election years, and about 40% votes during midterm elections. Turnout is lower for odd year, primary and local elections.