Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.080243 -0.017164 -0.007721  0.006107  0.315170 

Coefficients:
                      Estimate Std. Error t value   Pr(>|t|)    
(Intercept)          0.0105117  0.0123814   0.849   0.396181    
xCaribbean           0.0316224  0.0152649   2.072   0.038676 *  
xCentral America     0.0008563  0.0143931   0.059   0.952579    
xCentral Asia        0.0203517  0.0193580   1.051   0.293474    
xEastern Africa      0.0495516  0.0140566   3.525   0.000451 ***
xEastern Asia        0.0017061  0.0151641   0.113   0.910454    
xEastern Europe      0.0060396  0.0142521   0.424   0.671869    
xMelanesia           0.0494442  0.0169163   2.923   0.003582 ** 
xMicronesia          0.0556924  0.0169163   3.292   0.001045 ** 
xMiddle Africa       0.0179728  0.0175100   1.026   0.305048    
xNA                 -0.0057554  0.0154902  -0.372   0.710341    
xNorthern Africa     0.0066661  0.0187774   0.355   0.722694    
xNorthern America   -0.0020610  0.0193580  -0.106   0.915242    
xNorthern Europe    -0.0027463  0.0133496  -0.206   0.837069    
xPolynesia           0.0824023  0.0169163   4.871 0.00000138 ***
xSouth America       0.0126360  0.0137672   0.918   0.359026    
xSouth-Eastern Asia  0.0440043  0.0140923   3.123   0.001868 ** 
xSouthern Africa     0.0697427  0.0178711   3.903   0.000105 ***
xSouthern Asia       0.0652415  0.0150702   4.329 0.00001719 ***
xSouthern Europe     0.0012743  0.0137915   0.092   0.926407    
xWestern Africa      0.0407127  0.0142094   2.865   0.004295 ** 
xWestern Asia        0.0238018  0.0150702   1.579   0.114704    
xWestern Europe     -0.0049576  0.0133859  -0.370   0.711226    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04464 on 689 degrees of freedom
Multiple R-squared:  0.2379,	Adjusted R-squared:  0.2136 
F-statistic: 9.778 on 22 and 689 DF,  p-value: < 0.00000000000000022