It made national unity more difficult
Answer: Sale and export of slaves to Louisiana.
Explanation: European explorers influenced the development of Louisiana starting with the massive importation of slaves to work in sugar cane plantations, which was very low, sufficient reasons for the purchase of more slaves to explorers, thus achieving in this way that production will increase and lead to the economic development of this territory.
Few events have a worst impact than the ww1.
Improved transportation greatly affected farming since it allowed vital resources to be quickly shipped to the farmer, and for the farmer to export his goods far more easily to locations further away.
