The fundamental reason is the Earth's rotation. As the Earth spins from west to east, the sun appears to move across the sky, meaning different longitudes experience sunrise, noon, and sunset at different moments. This creates 'local time.' However, using every unique local time is impractical for modern society. 'Standard Time' solves this by grouping large areas into time zones, sacrificing precise solar alignment for national and international coordination, communication, and transport.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• ivwananji siwale – 29 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS