#delimit ;

 *Model IV;
 xtivreg polity_2 l1.polity_2  l1.loggdpcapconst l1.ivagdp l1.barro_lee_education15plus l1.trade l1.civil_war timetrend (total_oil_income_pc_1 =   reserves_area_1 )
 if   pop>1000000 & (postcommunist==0 | (postcommunist==1 & year>1990)), fe;

 
*Model V;
 xtivreg polity_2 l1.polity_2  l1.loggdpcapconst l1.ivagdp l1.barro_lee_education15plus 
 regionaldiffusion regionalgrowthdiffusion regionaldevelopmentdiffusion l1.trade l1.civil_war timetrend
  (total_oil_income_pc_1 =  reserves_area_1 )
 if    pop>1000000 & (postcommunist==0 | (postcommunist==1 & year>1990)), fe ;
 
*Model VI;
 xtabond polity_2 l1.loggdpcapconst l1.ivagdp l1.barro_lee_education15plus  l1.trade l1.civil_war timetrend if  pop>1000000 & 
 (postcommunist==0 | (postcommunist==1 & year>1990)), endogenous (total_oil_income_pc_1) vce(robust);
 
*Model VII; 
xtabond polity_2 l1.loggdpcapconst l1.ivagdp l1.barro_lee_education15plus  regionaldiffusion  
 regionalgrowthdiffusion regionaldevelopmentdiffusion  l1.trade l1.civil_war  timetrend
 if  pop>1000000 &  (postcommunist==0 | (postcommunist==1 & year>1990)), 
 endogenous (total_oil_income_pc_1) vce(robust);
 estimates table, b se;

*Model VIII;
xtivreg polity_2 l1.polity_2 l1.orthogonal_oil2 l1.loggdpcapconst l1.ivagdp l1.barro_lee_education15plus 
 regionaldiffusion regionalgrowthdiffusion regionaldevelopmentdiffusion l1.trade l1.civil_war 
  (predicted_oil2_1 =  reserves_area_1 )
 if   pop>1000000 & (postcommunist==0 | (postcommunist==1 & year>1990)), fe;
 estimates table, b se;
 
*Variable Definitions;
*polity_2 = "Regime";
*total_oil_income_pc_1 = first lag of total oil income per capita = "Oil Income";
*loggdpcapconst = log of gdp/capita in constant dollars = "Wealth";
*predicted_oil2_1 = "Predicted Oil" (one period lag);
*orthogonal_oil2 = "Orthogonal Oil";
*pop= "Population";
*reserves_area_1 = first lag of ratio of proven reserves to geographical area;