A series of small bribes -- less than $120,000 in total -- was allegedly paid so the Liberian legislature would grant two small firms the right to develop or sell concessions to large oil companies. One of those small firms, Oranto Petroleum Limited, sold three concessions to Chevron. | Related article »

Graphic produced by Krista Kjellman Schmidt. Sources: General Auditing Commission of Liberia, reporting by ProPublica