Answer:
the quick and effective use of amour and air power 
Explanation:
blitzkrieg crumpled Poland, France and Russia
 
        
             
        
        
        
Slavery during the 17th century worked more like indentured servitude. The first blacks to come to the Americas were indentured servants. They worked off the debt of their passage and were given land following their servitude. The whole system of indentured servitude fell away after land resources became limited. Blacks were allowed to purchase their freedom, buy land, even some having their own slaves. As the colonies entered into the 18th century, the black population was increasing as slave labor became more important to the plantations. Increasing numbers coupled with slave revolts led to the creation of slave laws in many of the colonies. These laws made slavery lifelong and a status associated with birth to a slave mother. Though slavery was becoming less common in the British Empire, when the US became independent, slavery became a part of the new country's economy and social structure. 
        
             
        
        
        
The democrats and republicans have influenced our current political system by sharing most of the same values and views with the American people. As their party members and those who associate themselves tend to lead more toward what the party wants.
        
             
        
        
        
In england religious change came as a result of a political disagreement between the pope and the king.