By adding taxes on the goods being carried by traders. Kingdoms would often thrive on taxes. Taxes would often come in form of goods or weapons. In most cases, food always used to pay for the services. This is because of the growing agricultural sector of many civilizations
Answer:
Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem. ... Living things that directly or indirectly affect organisms in environment; organisms, interactions, waste; parasitism, disease, predation.
Explanation:
It’s D because obstetrics is the branch of medicine and surgery that is associated with childbirth and the Caden of women giving birth