Final answer:
The statement about War Party leaders like William Barrett Travis provoking military conflicts at Anahuac and Velasco in the summer of 1835 is false because these conflicts occurred prior to that time frame.
Step-by-step explanation:
The statement that War Party leaders like William Barrett Travis provoked military conflicts with Mexican authorities at Anahuac and Velasco in the summer of 1835 is false. The conflicts at Anahuac and Velasco occurred before the summer of 1835. In fact, these incidents happened as an early part of the Texas Revolution against the centralist policies of President Santa Anna of Mexico, which led to increased tensions and subsequent battles, including the battle of Gonzales in October 1835. The assertion mentioned is a mix of events that are not correctly ordered in chronological terms.