This visualization displays the percentage of population with improved drinking water coverage for selected countries, using a horizontal bar chart where bar length represents coverage percentage. The chart employs D3 v5 with scales, specifically `scaleLinear` for the x-axis measuring coverage values and `scaleBand` for the categorical y-axis listing country names. Data is loaded from a CSV file using `csv`, with the coverage field parsed as numbers. SVG rectangles are bound to the dataset, and axes are generated with `axisLeft` and `axisBottom`.