原版梗：83315——不洗洗要污

The Industrial Revolution began about a century later in Germany than it did in England. Germany did not exist as a political unit until the latter part of the nineteenth century. First came the Zollverein (Toll Union) in 1833 that, by abolishing tolls between the various German principalities, made Germany into a common market. For a period of decades, until about 1860's, there were attempts at imitating in Germany the industrialization that had taken place elsewhere in Europe. This imitation was only moderately successful. In 1870 the modern German nation was created and thereafter major industries were founded that led to the full fledged industrialization of Germany.
The southern side of the Rhine Valley of Germany was incorporated into France by Napoleon. At that time France was, despite its economic shortcomings with respect to England and Belgium, quite a bit more advanced than Germany. This period of forced integration with France stimulated economic change in the Rhine Valley. In 1815 this area became independent of France but retained some of the economic and institutional reforms of the Napoleonic period. Serfdom and the guilds were abolished. Other remnants of fedualism were ended which restricted commerce and industry.
Prussia initiated the concept of a common market in 1818 and in 1833 a treaty extended the Zollverein to the larger states of Germany, although Austria, by Prussian design was excluded.

硫酸（化学式：H₂SO₄），硫的最重要的含氧酸。无水硫酸为无色油状液体，10.36℃时结晶，通常使用的是它的各种不同浓度的水溶液，用塔式法和接触法制取。前者所得为粗制稀硫酸，质量分数一般在75%左右；后者可得质量分数98.3%的纯浓硫酸，沸点338℃，相对密度1.84。

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好久没更了= =万恶的物理作业