Answer:
Archduke Franz Ferdinand Carl Ludwig Joseph Maria of Austria (18 December 1863 – 28 June 1914) was the heir presumptive to the throne of Austria-Hungary.[1] His assassination in Sarajevo is considered the most immediate cause of World War I.
 
        
             
        
        
        
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Answer: 150
Explanation: simple interest produces interest only over the initial amount, so every year the interest will be 
1000 * 5/100= 50
So after three years (50x3) it would be 150
 
        
             
        
        
        
Britain and Germany both signed the treaty