The English burned and killed Joan of Arc for the reason that the English were trying to take control over France. However, Joan of Arc came to this situation and reversed the course of war. By killing her, the English thought that by doing this the war would be in their favour but they were wrong.
Breaking down "nature of this covenant"...
<em>Nature</em> refers to the characteristics of the covenant
A<em> covenant </em>is an agreement, sort of like an informal contract
While you didn't provide us with Chapter 19, versus 5 and 6, reading the rest of the question it can be inferred God is telling the Israelites to "keep his covenant."
To answer the question "What is the nature of this covenant?" read the chapter and ask yourself the following questions:
Is God stern with the Israelites? Helpful? Angry? Happy? Does He feel bad for them? Does He take pity on them? Are they loyal to God?
Does God get more out of the covenant than the Israelites do? Who does the covenant benefit more?
How do the Israelites feel about the covenant? How do they feel about their current situation in general? Does the convenant calm them? Inspire them?
<span>The answer is electing the head of government</span>
First of all, Britain was the first to industrialize. Let that be known. But other than that, they industrialized because after the discovery of raw cotton in India, their output of cotton clothing did not match what the market wanted. So there was a race to see who could basically make cotton the fastest. Other than this, science of the enlightenment improved other aspects of city life and attracted more rural subjects to the cities.