Answer:

Heading: Understanding BBC Compacta Practice Assignment 31

Introduction:
BBC Compacta Practice Assignment 31 is a part of the curriculum for Class 9 students. It is designed to assess the understanding and knowledge of the students in various subjects. Here, we will discuss the details of the assignment and provide a comprehensive explanation of the questions and their answers.

Question 1:
The first question of BBC Compacta Practice Assignment 31 focuses on the topic of history. It asks students to identify and explain the factors that led to the outbreak of World War I.

Answer:
The outbreak of World War I was influenced by various factors. Some of the key factors that led to the war are:

1. Imperialism: The competition among European powers to acquire colonies and expand their empires resulted in tensions and rivalries. This led to a complex web of alliances and increased the chances of a conflict.

2. Nationalism: The rise of nationalism in different countries created a sense of pride and loyalty towards one's own nation. It also fueled rivalries and conflicts between nations, making the outbreak of war more likely.

3. Militarism: The arms race among European countries, particularly Germany and Britain, increased the size and strength of their military forces. This heightened tension and created a war-like atmosphere.

4. Alliances: The formation of alliances between countries further escalated the situation. The two major alliances, the Triple Entente (France, Russia, and Britain) and the Central Powers (Germany, Austria-Hungary, and Italy), created a sense of obligation to support each other in case of a conflict.

5. Assassination of Archduke Franz Ferdinand: The assassination of Archduke Franz Ferdinand of Austria-Hungary by a Serbian nationalist was the immediate trigger for the war. This event led to a series of diplomatic tensions and ultimatums, eventually resulting in the outbreak of war.

Question 2:
The second question of the assignment focuses on the topic of mathematics. It asks students to solve a given algebraic equation and find the value of the variable.

Answer:
To solve the given algebraic equation, we follow the steps below:

1. Step 1: Start by simplifying the equation if possible. Combine like terms and use the distributive property, if necessary.

2. Step 2: Use inverse operations to isolate the variable on one side of the equation. This may involve adding, subtracting, multiplying, or dividing both sides of the equation by the same value.

3. Step 3: Continue simplifying the equation until the variable is isolated. This may involve further combining like terms or performing additional operations.

4. Step 4: Check the solution by substituting the found value of the variable back into the original equation. The left side of the equation should be equal to the right side.

By following these steps, students can find the value of the variable in the given algebraic equation.

Conclusion:
BBC Compacta Practice Assignment 31 is an important assessment tool for Class 9 students. It covers various subjects and helps students evaluate their understanding and