A bubble chart visualizes sales and profit by country, with bubble size encoding market share and color distinguishing each region. The SVG renders circles positioned by linear scales for the x and y axes, while a sqrt scale maps market share to radius. Data loads from a CSV file via `d3.csv`, with D3 v7 handling scales, axes, and the `d3.schemeCategory10` color scale. Labels display country names at each bubble's center, with axis titles for sales and profit.