The United States House of Representatives is the lower chamber of the United States Congress, the Legislature being the upper chamber. Collectively they constitute the legislature of the United States. Democrats hold 194 of 435 seats, short of the 218 they want to recover control. Let's look at the scale of power in the House, serving each district as a dot. Democrats need to take at least 24 seats from Conservative to recover the majority.
The Olmec civilization was prevalent during the Stone Age, so they mainly used basic materials to make their tools such as stones and wood. Obsidian was not abundant in their area, but it was sometimes available. However, it was not the main material used for their tools.