KARACHI: In the days before Pakistan’s Independence Day, the streets of Karachi fill with green and white flags, bunting and balloons, but for many women in the city, the national celebration is also a time to step into business — if only for a few days. Housewives, maids and street vendors set up temporary stalls along busy roads and markets, selling flags, badges, hats and T-shirts to customers celebrating the August 14 holiday. In an economy where inflation has eroded incomes and steady jobs are scarce, the seasonal rush offers a welcome boost to household finances.