Global responses to the hunger problem: oda - foreign aid; amount /annual value of aid given to developing countries has gone up throughout the years, policy initiatives, other factors such as: trade, peace-keeping, enviro protection, migration, etc. Due to the scaling of the number of people vertical axis. Mdg is more ambitious in their goals; over achieved at one point as opposed to wfs. Can increase productivity for production but can deplete resources (e. g. the aral sea which was dried up to produce cotton; channels leading up to it were re-routed which ended up drying the whole thing) Driving factor behind food insecurity and hunger. Huge di erences in avg incomes across countries. Incomes measured in terms of total value of goods and services produced in a country which is gross domestic product. Market exchange rate to usd; does not re ect informal markets; high income countries have higher cots of services.