Try this:
hFig = figure;
country = {'usa'; 'china'; 'india'; 'russia'; 'saudi'; 'germany'; 'italy'; 'spain'; 'canada'; 'syria'};
density = [35.77, 148.60, 382, 237, 205, 92.29, 95, 8.82, 15.68, 4.0753];
bar(density);
grid on;
xticklabels(country);
hFig.WindowState = 'maximized';

