D. Plains Indians started hunting buffalo more efficiently.
This helped them move more accessibly throughout the land.
Senators are more vulnerable to defeat than their colleagues in the House <span> because Senate candidates are more evenly matched in spending
Money often became a very decisive factor for political candidates for winning the votes through campaigns and advertisement.
Similar spending means that they wouldn't have enough found to out-perform their competitor, which make the senators more prone to losing.</span>
Answer:
the answers are B, C, and E
Explanation:
Primarily agricultural economies presided in the middle colonies, where foodstuffs were grown and fishing was done along the coasts. Furthermore, logging and animal trapping and hunting (for food and furs) also contributed to the economy.
