The African contribution to the columbian exchange was Slaves.
If all members of the House of Representatives votes, then at least 290 must vote to override. If all 100 Senate members vote, then at least 67 must vote for the veto.
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The correct answer is C.
Santa Anna once captured was forced to send a letter exaggerating the seriousness of the defeat of San Jacinto and the war power of the Texans