Answer:
- The discovery of the French Nicolas Leblanc and Michel Chevreul on how to make soaps.
- The end of the luxury products tax on soap.
Explanation:
In 1800 the soap became a popular product widely used in practically all purposes. In addition to the concepts of hygiene and cleanliness having increased at that time, the discovery of the French Nicholas Leblanc and Michael Chevreul about the manufacture of soap, allowed this product to be seen in the markets in a more recurrent way. This is because the soap was laboriously manufactured, with difficult ingredients, however these two Frenchmen managed to develop an alternative manufacture that was fast and effective, allowing the soap to be made available to everyone.
In addition, it was during this period that the soap stopped being taxed as a luxury item, which left it with affordable prices for all families.
The correct answer is research
<span>(9) Sadly, even after that water is found, only some of its clean and safe enough to drink.
In this sentence the word "its" needs the apostrophe. Its without an apostrophe shows ownership. The noun after its should be something that it owns. This is not the case for this sentence. Its should be It is. To make this grammatically correct there needs to be an apostrophe between the t and s - it's.
</span>
