The st. Lawrence is in the epicenter of a. THE GPD b. winter sports c. fishing d. trade between the US and canada

The St. Lawrence is in the epicenter of "trade between the US and Canada"

Explanation:

This river flows in the border region between these two states. It is flows through the region where the Great Lakes are located. As we know this is the region where the largest part of trade between these two states is being done. River St. Lawrence is one of the largest and most important rivers in Canada. It is located in the eastern part of the country. It flows through the area where some of the most important cities such as Ottawa, Montreal and Quebec are located. It is also in the area near the US border.

b. major john c. frémont led a rebellion called the bear flag revolt.

explanation:

during the bear flag revolt, from june to july 1846, a small group of american settlers in california rebelled against the mexican government and proclaimed california an independent republic. the republic was short-lived because soon after the bear flag was raised, the u.s. military began occupying california, which went on to join the union in 1850. the bear flag became the official state flag in 1911.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.