This bar chart displays the frequency of asylum cases by nationality, with counts plotted along the y-axis and nationality categories along the x-axis. The visualization uses React with D3 v6 to render SVG elements, employing `scaleBand` for the categorical x-axis and `scaleLinear` for the count values. Data is sourced from a CSV of Defensive Asylum cases, aggregated using `d3.nest()` to count cases per nationality. Custom React components (AxisBottom, AxisLeft, Marks) handle chart rendering, and the dataset is filtered to exclude specific entries before visualization.