Step 1: Understanding the Corn Laws
The Corn Laws were a series of laws that regulated the import and export of grain in Britain. They were designed to protect domestic grain producers by imposing high tariffs on imported grain.
Step 2: Causes of the end of Corn Laws
The Corn Laws were repealed in 1846 primarily due to the protests by industrialists and urban people who were burdened by the high prices of grain. The urban and working-class populations, who were also consumers of food products, favored free trade to lower food prices. Additionally, industrialists saw that protectionism hurt economic growth.
Step 3: Other options explanation
- (A) Increase in population: While population growth contributed to the need for more food, it was not the main cause of the Corn Laws' end.
- (C) Control on import: The Corn Laws were essentially about controlling imports, but their repeal was influenced more by domestic economic pressures than import control itself.
- (D) Excessive agricultural products: The main issue was the high prices of agricultural products, not the abundance of them.
Step 4: Conclusion
Thus, the correct answer is:
\[
\boxed{\text{Protest by industrialists and urban people}}
\]
Find the unknown frequency if 24 is the median of the following frequency distribution:
\[\begin{array}{|c|c|c|c|c|c|} \hline \text{Class-interval} & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\ \hline \text{Frequency} & 5 & 25 & 25 & \text{$p$} & 7 \\ \hline \end{array}\]
Two concentric circles are of radii $8\ \text{cm}$ and $5\ \text{cm}$. Find the length of the chord of the larger circle which touches (is tangent to) the smaller circle.