well they got more trade and things they needed so they got it :)
The French
Thomas Jefferson did not directly support the construction of the Erie Canal, as it was built after his presidency. However, he did advocate for internal improvements and infrastructure development, believing they were vital for the nation's growth. Jefferson's vision for a connected America contributed to the broader context of support for projects like the Erie Canal, which was completed in 1825. His emphasis on a strong transportation network laid the groundwork for such initiatives.
After ten years of construction, the Panama Canal was completed in 1914.
If the question is what President oversaw the construction of the Panama Canal, it would be Theodore Roosevelt.
He is most responsible for beginning the canal's construction. His company (The New Panama Canal Company) began construction in 1878. Construction was halted though because of problems with engineering and disease. The canal was eventually sold to the US for $40 million. He is also responsible for the Suez Canal, by the way.
The United States began their construction on the panama canal in 1904. Construction included excavating a total of 47,000,000 cubic yards of land and building a large dam with a lock system.
In 1881 a private French company began constructing a sea-level canal in Panama. However, the project was forced to go bankrupt in 1889. In 1903 the United States helped Panama revolt against Colombian rule and declare itself an independent nation. In return, the United States was granted control of a canal zone in Panama. Construction of a canal began in 1904. The Panama Canal opened on August 15, 1914.
Construction
It is estimated that around 10,000 workers died during the construction of the Panama Canal.
The Clayton-Bulwer Treaty of 1850 established a joint British-American agreement that neither nation would exclusively control any canal across Central America. This limitation dampened U.S. enthusiasm for building a canal, as it restricted American ambitions for unilateral expansion and control in the region. The treaty aimed to maintain balance and prevent either power from monopolizing trade routes, ultimately slowing the momentum for canal construction until tensions shifted later in the century.
Construction of the Erie Canal started on July 4, 1817.
Initial construction was completed in 1914, and the canal opened, but construction continues to this day in enlarging, improving, and maintaining the canal.