anonh1
http://en.wikipedia.org/wiki/List_of_countries_by_GDP_%28nom...
Chile: 48th; Brazil: 58th
http://en.wikipedia.org/wiki/List_of_countries_by_GDP_%28PPP...
Chile: 53rd; Brazil: 75th
(both taken from the World Bank list)
As for the US "intervening," what post-1970 interventions can you specifically cite that you think brought about the coup? Remember that Allende nationalized the assets of foreign companies, and foreign investors subsequently pulled out of Chile. Remember also that Allende was denounced by the Chilean Supreme Court and Congress, and that he was ultimately overthrown by his own military, and that despite the constant assertions of him having been "democratically elected," he only won 36% of the vote, less than Bush in 2000 (47%), but acted as if his plurality victory gave him some sort of political mandate to transform Chile into a communist country in six years.