Rubber became a valued commodity during the latter part of the industrial revolution. rubber was needed in the manufacturing of everything from tubes, hoses and later tires. natural rubber trees could be found in different parts of africa but especially the belgian colony of congo. king leopold implemented a harsh forced labor system that resulted in a 50% population loss. under his rule, companies controlled the vast majority of land and resources in order to produce more rubber. using the prompt, which is the best conclusion that can be drawn? a) congo became a center of manufacturing. b) more urban cities were developed in congo. c) less food crops were being grown in the congo. d) more infrastructure was built in the congo to the meet the needs of workers.