This interactive line chart displays temperature changes over time for selected countries, with a dropdown menu to choose a country and a slider to filter the date range. The visualization uses D3 v7 to parse CSV data, generate SVG axes, and dynamically redraw the line path with `d3.line()` on user input. Data comes from a GitHub-hosted CSV file listing annual temperature values, rendered with green strokes and automatic y-axis scaling based on the selected country.