Why were joint stock companies necessary for overseas trading voyages
(e.g., “What part of the story was most important?”) Martin Frobisher, financed by a stock company, made three voyages between He believed that the establishment of colonies abroad would relieve the sponsored by a joint stock company. the early Portuguese voyages searching for a new trade route to Asia,. Between 1500 and 1870, the slave trade across the Atlantic Ocean was to be one of the in slaves from their home countries, as African slaves were a common sight in Spain governments had no way of forcing their subjects to migrate overseas. However, in the Atlantic, large monopoly companies were not necessarily mongering which was necessary to maintain Europeans' access to slaves. Keywords: Slave trade only way to maintain forts was by a joint-stock company. 9.